72404435825 has 12 divisors (see below), whose sum is σ = 90376084608. Its totient is φ = 57539946000.

The previous prime is 72404435821. The next prime is 72404435833. The reversal of 72404435825 is 52853440427.

It is not a de Polignac number, because 72404435825 - 2² = 72404435821 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72404435821) 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, 9586217 + ... + 9593766.

It is an arithmetic number, because the mean of its divisors is an integer number (7531340384).

Almost surely, 2^72404435825 is an apocalyptic number.

It is an amenable number.

72404435825 is a deficient number, since it is larger than the sum of its proper divisors (17971648783).

72404435825 is a wasteful number, since it uses less digits than its factorization.

72404435825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19180144 (or 19180139 counting only the distinct ones).

The product of its (nonzero) digits is 1075200, while the sum is 44.

The spelling of 72404435825 in words is "seventy-two billion, four hundred four million, four hundred thirty-five thousand, eight hundred twenty-five".