72425172 has 12 divisors (see below), whose sum is σ = 168992096. Its totient is φ = 24141720.

The previous prime is 72425153. The next prime is 72425237. The reversal of 72425172 is 27152427.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3017704 + ... + 3017727.

Almost surely, 2^72425172 is an apocalyptic number.

It is an amenable number.

72425172 is an abundant number, since it is smaller than the sum of its proper divisors (96566924).

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

72425172 is a wasteful number, since it uses less digits than its factorization.

72425172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6035438 (or 6035436 counting only the distinct ones).

The product of its digits is 7840, while the sum is 30.

The square root of 72425172 is about 8510.2979971327. The cubic root of 72425172 is about 416.8340407750.

Adding to 72425172 its reverse (27152427), we get a palindrome (99577599).

The spelling of 72425172 in words is "seventy-two million, four hundred twenty-five thousand, one hundred seventy-two".