725224025 has 36 divisors (see below), whose sum is σ = 954185580. Its totient is φ = 546134400.

The previous prime is 725223997. The next prime is 725224043. The reversal of 725224025 is 520422527.

It can be written as a sum of positive squares in 6 ways, for example, as 23609881 + 701614144 = 4859^2 + 26488^2 .

It is not a de Polignac number, because 725224025 - 2¹⁰ = 725223001 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1340255 + ... + 1340795.

It is an arithmetic number, because the mean of its divisors is an integer number (26505155).

Almost surely, 2^725224025 is an apocalyptic number.

It is an amenable number.

725224025 is a deficient number, since it is larger than the sum of its proper divisors (228961555).

725224025 is a wasteful number, since it uses less digits than its factorization.

725224025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 666 (or 618 counting only the distinct ones).

The product of its (nonzero) digits is 11200, while the sum is 29.

The square root of 725224025 is about 26929.9837541726. The cubic root of 725224025 is about 898.4434101842.

The spelling of 725224025 in words is "seven hundred twenty-five million, two hundred twenty-four thousand, twenty-five".