25988672428 has 12 divisors (see below), whose sum is σ = 45502344160. Its totient is φ = 12988002672.

The previous prime is 25988672357. The next prime is 25988672449. The reversal of 25988672428 is 82427688952.

It is a super-2 number, since 2×25988672428² (a number of 22 digits) contains 22 as substring.

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 in 3 ways as a sum of consecutive naturals, for example, 1574148 + ... + 1590571.

Almost surely, 2^25988672428 is an apocalyptic number.

It is an amenable number.

25988672428 is a deficient number, since it is larger than the sum of its proper divisors (19513671732).

25988672428 is a wasteful number, since it uses less digits than its factorization.

25988672428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3166776 (or 3166774 counting only the distinct ones).

The product of its digits is 30965760, while the sum is 61.

The spelling of 25988672428 in words is "twenty-five billion, nine hundred eighty-eight million, six hundred seventy-two thousand, four hundred twenty-eight".