725164140 has 48 divisors (see below), whose sum is σ = 2100480480. Its totient is φ = 186708480.

The previous prime is 725164133. The next prime is 725164177. The reversal of 725164140 is 41461527.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 725164098 and 725164107.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 206641 + ... + 210120.

It is an arithmetic number, because the mean of its divisors is an integer number (43760010).

Almost surely, 2^725164140 is an apocalyptic number.

It is an amenable number.

725164140 is an abundant number, since it is smaller than the sum of its proper divisors (1375316340).

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

725164140 is a wasteful number, since it uses less digits than its factorization.

725164140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 416802 (or 416800 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 30.

The square root of 725164140 is about 26928.8718664559. The cubic root of 725164140 is about 898.4186800030.

The spelling of 725164140 in words is "seven hundred twenty-five million, one hundred sixty-four thousand, one hundred forty".