72418725 has 48 divisors (see below), whose sum is σ = 140883840. Its totient is φ = 36345600.

The previous prime is 72418721. The next prime is 72418727. The reversal of 72418725 is 52781427.

It is not a de Polignac number, because 72418725 - 2² = 72418721 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 72418725.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72418721) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 8320 + ... + 14630.

It is an arithmetic number, because the mean of its divisors is an integer number (2935080).

Almost surely, 2^72418725 is an apocalyptic number.

72418725 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

It is an amenable number.

72418725 is a deficient number, since it is larger than the sum of its proper divisors (68465115).

72418725 is a wasteful number, since it uses less digits than its factorization.

72418725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6347 (or 6336 counting only the distinct ones).

The product of its digits is 31360, while the sum is 36.

The square root of 72418725 is about 8509.9192123075. The cubic root of 72418725 is about 416.8216721066.

The spelling of 72418725 in words is "seventy-two million, four hundred eighteen thousand, seven hundred twenty-five".