25662623488 has 36 divisors (see below), whose sum is σ = 51467883208. Its totient is φ = 12770472960.

The previous prime is 25662623443. The next prime is 25662623489. The reversal of 25662623488 is 88432626652.

It is a super-2 number, since 2×25662623488² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25662623489) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 183531 + ... + 291562.

Almost surely, 2^25662623488 is an apocalyptic number.

It is an amenable number.

25662623488 is an abundant number, since it is smaller than the sum of its proper divisors (25805259720).

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

25662623488 is an equidigital number, since it uses as much as digits as its factorization.

25662623488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 475320 (or 475306 counting only the distinct ones).

The product of its digits is 6635520, while the sum is 52.

The spelling of 25662623488 in words is "twenty-five billion, six hundred sixty-two million, six hundred twenty-three thousand, four hundred eighty-eight".