25504638112 has 24 divisors (see below), whose sum is σ = 50472435636. Its totient is φ = 12686241792.

The previous prime is 25504638101. The next prime is 25504638121. The reversal of 25504638112 is 21183640552.

It can be written as a sum of positive squares in 2 ways, for example, as 25117178256 + 387459856 = 158484^2 + 19684^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2058643 + ... + 2070994.

Almost surely, 2^25504638112 is an apocalyptic number.

It is an amenable number.

25504638112 is a deficient number, since it is larger than the sum of its proper divisors (24967797524).

25504638112 is a wasteful number, since it uses less digits than its factorization.

25504638112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4129840 (or 4129832 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 37.

The spelling of 25504638112 in words is "twenty-five billion, five hundred four million, six hundred thirty-eight thousand, one hundred twelve".