72525637278 has 40 divisors (see below), whose sum is σ = 162539601048. Its totient is φ = 24170980176.

The previous prime is 72525637267. The next prime is 72525637291. The reversal of 72525637278 is 87273652527.

72525637278 is a `hidden beast` number, since 7 + 2 + 5 + 2 + 563 + 7 + 2 + 78 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 968800 + ... + 1040972.

Almost surely, 2^72525637278 is an apocalyptic number.

72525637278 is an abundant number, since it is smaller than the sum of its proper divisors (90013963770).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

72525637278 is a wasteful number, since it uses less digits than its factorization.

72525637278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78390 (or 78381 counting only the distinct ones).

The product of its digits is 9878400, while the sum is 54.

The spelling of 72525637278 in words is "seventy-two billion, five hundred twenty-five million, six hundred thirty-seven thousand, two hundred seventy-eight".