725425236 has 36 divisors (see below), whose sum is σ = 1858839892. Its totient is φ = 238495104.

The previous prime is 725425231. The next prime is 725425271. The reversal of 725425236 is 632524527.

725425236 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 127916100 + 597509136 = 11310^2 + 24444^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 725425236.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (725425231) 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, 135391 + ... + 140646.

Almost surely, 2^725425236 is an apocalyptic number.

It is an amenable number.

725425236 is an abundant number, since it is smaller than the sum of its proper divisors (1133414656).

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

725425236 is a wasteful number, since it uses less digits than its factorization.

725425236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 276120 (or 276115 counting only the distinct ones).

The product of its digits is 100800, while the sum is 36.

The square root of 725425236 is about 26933.7193124158. The cubic root of 725425236 is about 898.5264925490.

The spelling of 725425236 in words is "seven hundred twenty-five million, four hundred twenty-five thousand, two hundred thirty-six".