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25112313 = 322790257
BaseRepresentation
bin101111111001…
…0111011111001
31202020211121200
41133302323321
522412043223
62254124413
7423310512
oct137627371
952224550
1025112313
11131a2286
1284b0709
135283375
143499a09
152310a43
hex17f2ef9

25112313 has 6 divisors (see below), whose sum is σ = 36273354. Its totient is φ = 16741536.

The previous prime is 25112287. The next prime is 25112333. The reversal of 25112313 is 31321152.

It can be written as a sum of positive squares in only one way, i.e., 23736384 + 1375929 = 4872^2 + 1173^2 .

It is not a de Polignac number, because 25112313 - 26 = 25112249 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25112333) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1395120 + ... + 1395137.

It is an arithmetic number, because the mean of its divisors is an integer number (6045559).

Almost surely, 225112313 is an apocalyptic number.

It is an amenable number.

25112313 is a deficient number, since it is larger than the sum of its proper divisors (11161041).

25112313 is a wasteful number, since it uses less digits than its factorization.

25112313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2790263 (or 2790260 counting only the distinct ones).

The product of its digits is 180, while the sum is 18.

The square root of 25112313 is about 5011.2187140455. The cubic root of 25112313 is about 292.8389933400.

Adding to 25112313 its reverse (31321152), we get a palindrome (56433465).

It can be divided in two parts, 25112 and 313, that added together give a triangular number (25425 = T225).

The spelling of 25112313 in words is "twenty-five million, one hundred twelve thousand, three hundred thirteen".

Divisors: 1 3 9 2790257 8370771 25112313