72524768725 has 12 divisors (see below), whose sum is σ = 89944706340. Its totient is φ = 58010787200.

The previous prime is 72524768707. The next prime is 72524768741. The reversal of 72524768725 is 52786742527.

It can be written as a sum of positive squares in 6 ways, for example, as 43744996 + 72481023729 = 6614^2 + 269223^2 .

It is not a de Polignac number, because 72524768725 - 2²³ = 72516380117 is a prime.

It is a super-2 number, since 2×72524768725² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 59410 + ... + 385459.

It is an arithmetic number, because the mean of its divisors is an integer number (7495392195).

Almost surely, 2^72524768725 is an apocalyptic number.

It is an amenable number.

72524768725 is a deficient number, since it is larger than the sum of its proper divisors (17419937615).

72524768725 is a wasteful number, since it uses less digits than its factorization.

72524768725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 451400 (or 451395 counting only the distinct ones).

The product of its digits is 13171200, while the sum is 55.

The spelling of 72524768725 in words is "seventy-two billion, five hundred twenty-four million, seven hundred sixty-eight thousand, seven hundred twenty-five".