723634925 has 12 divisors (see below), whose sum is σ = 966331380. Its totient is φ = 534376320.

The previous prime is 723634921. The next prime is 723634943. The reversal of 723634925 is 529436327.

723634925 = 19021² + 19022².

It can be written as a sum of positive squares in 6 ways, for example, as 282172804 + 441462121 = 16798^2 + 21011^2 .

It is not a de Polignac number, because 723634925 - 2² = 723634921 is a prime.

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (723634921) 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, 1112960 + ... + 1113609.

It is an arithmetic number, because the mean of its divisors is an integer number (80527615).

Almost surely, 2^723634925 is an apocalyptic number.

723634925 is the 19022-nd centered square number.

It is an amenable number.

723634925 is a deficient number, since it is larger than the sum of its proper divisors (242696455).

723634925 is a wasteful number, since it uses less digits than its factorization.

723634925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2226592 (or 2226587 counting only the distinct ones).

The product of its digits is 272160, while the sum is 41.

The square root of 723634925 is about 26900.4632859733. The cubic root of 723634925 is about 897.7867117287.

The spelling of 723634925 in words is "seven hundred twenty-three million, six hundred thirty-four thousand, nine hundred twenty-five".