72598725 has 36 divisors (see below), whose sum is σ = 130692900. Its totient is φ = 38522880.

The previous prime is 72598703. The next prime is 72598739. The reversal of 72598725 is 52789527.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 3392964 + 69205761 = 1842^2 + 8319^2 .

It is not a de Polignac number, because 72598725 - 2⁵ = 72598693 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 an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 50821 + ... + 52229.

Almost surely, 2^72598725 is an apocalyptic number.

72598725 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

It is an amenable number.

72598725 is a deficient number, since it is larger than the sum of its proper divisors (58094175).

72598725 is a wasteful number, since it uses less digits than its factorization.

72598725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1654 (or 1646 counting only the distinct ones).

The product of its digits is 352800, while the sum is 45.

The square root of 72598725 is about 8520.4885423314. The cubic root of 72598725 is about 417.1667293871.

The spelling of 72598725 in words is "seventy-two million, five hundred ninety-eight thousand, seven hundred twenty-five".