72475804525 has 12 divisors (see below), whose sum is σ = 89988739732. Its totient is φ = 57904035840.

The previous prime is 72475804493. The next prime is 72475804529. The reversal of 72475804525 is 52540857427.

It can be written as a sum of positive squares in 6 ways, for example, as 659308329 + 71816496196 = 25677^2 + 267986^2 .

It is not a de Polignac number, because 72475804525 - 2⁵ = 72475804493 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72475804529) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1895892 + ... + 1933741.

Almost surely, 2^72475804525 is an apocalyptic number.

It is an amenable number.

72475804525 is a deficient number, since it is larger than the sum of its proper divisors (17512935207).

72475804525 is a wasteful number, since it uses less digits than its factorization.

72475804525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3830400 (or 3830395 counting only the distinct ones).

The product of its (nonzero) digits is 3136000, while the sum is 49.

The spelling of 72475804525 in words is "seventy-two billion, four hundred seventy-five million, eight hundred four thousand, five hundred twenty-five".