725202164 has 6 divisors (see below), whose sum is σ = 1269103794. Its totient is φ = 362601080.

The previous prime is 725202157. The next prime is 725202173. The reversal of 725202164 is 461202527.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 637966564 + 87235600 = 25258^2 + 9340^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 90650267 + ... + 90650274.

It is an arithmetic number, because the mean of its divisors is an integer number (211517299).

Almost surely, 2^725202164 is an apocalyptic number.

It is an amenable number.

725202164 is a deficient number, since it is larger than the sum of its proper divisors (543901630).

725202164 is a wasteful number, since it uses less digits than its factorization.

725202164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181300545 (or 181300543 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 29.

The square root of 725202164 is about 26929.5778652396. The cubic root of 725202164 is about 898.4343825973.

The spelling of 725202164 in words is "seven hundred twenty-five million, two hundred two thousand, one hundred sixty-four".