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72360625 = 54115777
BaseRepresentation
bin1000101000000…
…10001010110001
312001011022010011
410110002022301
5122011020000
611102534521
71536024631
oct424021261
9161138104
1072360625
1137933677
1220297441
1311cb714c
1498786c1
1565452ba
hex45022b1

72360625 has 10 divisors (see below), whose sum is σ = 90422618. Its totient is φ = 57888000.

The previous prime is 72360623. The next prime is 72360637. The reversal of 72360625 is 52606327.

It can be written as a sum of positive squares in 5 ways, for example, as 44997264 + 27363361 = 6708^2 + 5231^2 .

It is not a de Polignac number, because 72360625 - 21 = 72360623 is a prime.

It is a super-3 number, since 3×723606253 (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72360623) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 57264 + ... + 58513.

Almost surely, 272360625 is an apocalyptic number.

It is an amenable number.

72360625 is a deficient number, since it is larger than the sum of its proper divisors (18061993).

72360625 is an equidigital number, since it uses as much as digits as its factorization.

72360625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115797 (or 115782 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 31.

The square root of 72360625 is about 8506.5048639262. The cubic root of 72360625 is about 416.7101732348.

It can be divided in two parts, 7 and 2360625, that added together give a palindrome (2360632).

The spelling of 72360625 in words is "seventy-two million, three hundred sixty thousand, six hundred twenty-five".

Divisors: 1 5 25 125 625 115777 578885 2894425 14472125 72360625