72659925 has 36 divisors (see below), whose sum is σ = 140158564. Its totient is φ = 35769600.

The previous prime is 72659911. The next prime is 72659927. The reversal of 72659925 is 52995627.

It can be written as a sum of positive squares in 6 ways, for example, as 23126481 + 49533444 = 4809^2 + 7038^2 .

It is not a de Polignac number, because 72659925 - 2⁶ = 72659861 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72659927) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 9496 + ... + 15345.

Almost surely, 2^72659925 is an apocalyptic number.

72659925 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

It is an amenable number.

72659925 is a deficient number, since it is larger than the sum of its proper divisors (67498639).

72659925 is a wasteful number, since it uses less digits than its factorization.

72659925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24870 (or 24862 counting only the distinct ones).

The product of its digits is 340200, while the sum is 45.

The square root of 72659925 is about 8524.0791291494. The cubic root of 72659925 is about 417.2839189254.

The spelling of 72659925 in words is "seventy-two million, six hundred fifty-nine thousand, nine hundred twenty-five".