725723361 has 32 divisors (see below), whose sum is σ = 1210736640. Its totient is φ = 425638800.

The previous prime is 725723359. The next prime is 725723371. The reversal of 725723361 is 163327527.

It is not a de Polignac number, because 725723361 - 2¹ = 725723359 is a prime.

It is a super-2 number, since 2×725723361² = 1053348793402272642, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (725723311) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 30205 + ... + 48618.

It is an arithmetic number, because the mean of its divisors is an integer number (37835520).

Almost surely, 2^725723361 is an apocalyptic number.

It is an amenable number.

725723361 is a deficient number, since it is larger than the sum of its proper divisors (485013279).

725723361 is a wasteful number, since it uses less digits than its factorization.

725723361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78874 (or 78868 counting only the distinct ones).

The product of its digits is 52920, while the sum is 36.

The square root of 725723361 is about 26939.2531633674. The cubic root of 725723361 is about 898.6495635929.

The spelling of 725723361 in words is "seven hundred twenty-five million, seven hundred twenty-three thousand, three hundred sixty-one".