623661925 has 12 divisors (see below), whose sum is σ = 775687456. Its totient is φ = 497415600.

The previous prime is 623661923. The next prime is 623661943. The reversal of 623661925 is 529166326.

It is not a de Polignac number, because 623661925 - 2¹ = 623661923 is a prime.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (623661923) 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, 29409 + ... + 45958.

Almost surely, 2^623661925 is an apocalyptic number.

It is an amenable number.

623661925 is a deficient number, since it is larger than the sum of its proper divisors (152025531).

623661925 is a wasteful number, since it uses less digits than its factorization.

623661925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75708 (or 75703 counting only the distinct ones).

The product of its digits is 116640, while the sum is 40.

The square root of 623661925 is about 24973.2241610890. The cubic root of 623661925 is about 854.3773837724.

The spelling of 623661925 in words is "six hundred twenty-three million, six hundred sixty-one thousand, nine hundred twenty-five".