725438172 has 24 divisors (see below), whose sum is σ = 1708511616. Its totient is φ = 239552368.

The previous prime is 725438149. The next prime is 725438173. The reversal of 725438172 is 271834527.

It is a self number, because there is not a number n which added to its sum of digits gives 725438172.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (725438173) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 281208 + ... + 283775.

It is an arithmetic number, because the mean of its divisors is an integer number (71187984).

Almost surely, 2^725438172 is an apocalyptic number.

It is an amenable number.

725438172 is an abundant number, since it is smaller than the sum of its proper divisors (983073444).

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

725438172 is a wasteful number, since it uses less digits than its factorization.

725438172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 565097 (or 565095 counting only the distinct ones).

The product of its digits is 94080, while the sum is 39.

The square root of 725438172 is about 26933.9594564186. The cubic root of 725438172 is about 898.5318334483.

The spelling of 725438172 in words is "seven hundred twenty-five million, four hundred thirty-eight thousand, one hundred seventy-two".