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10687725 = 325247501
BaseRepresentation
bin101000110001…
…010011101101
3202002222210200
4220301103231
510214001400
61021024113
7156562356
oct50612355
922088720
1010687725
11603a934
1236b5039
1322a28c9
1415c2d2d
15e11b00
hexa314ed

10687725 has 18 divisors (see below), whose sum is σ = 19143306. Its totient is φ = 5700000.

The previous prime is 10687687. The next prime is 10687727. The reversal of 10687725 is 52778601.

10687725 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 915849 + 9771876 = 957^2 + 3126^2 .

It is not a de Polignac number, because 10687725 - 211 = 10685677 is a prime.

It is a super-2 number, since 2×106877252 = 228454931351250, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 10687725.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10687727) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 23526 + ... + 23975.

It is an arithmetic number, because the mean of its divisors is an integer number (1063517).

Almost surely, 210687725 is an apocalyptic number.

10687725 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

10687725 is a deficient number, since it is larger than the sum of its proper divisors (8455581).

10687725 is a wasteful number, since it uses less digits than its factorization.

10687725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47517 (or 47509 counting only the distinct ones).

The product of its (nonzero) digits is 23520, while the sum is 36.

The square root of 10687725 is about 3269.2086198345. The cubic root of 10687725 is about 220.2732486282.

The spelling of 10687725 in words is "ten million, six hundred eighty-seven thousand, seven hundred twenty-five".

Divisors: 1 3 5 9 15 25 45 75 225 47501 142503 237505 427509 712515 1187525 2137545 3562575 10687725