25555280504 has 16 divisors (see below), whose sum is σ = 51602008920. Its totient is φ = 11794744800.

The previous prime is 25555280489. The next prime is 25555280533. The reversal of 25555280504 is 40508255552.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 122861822 + ... + 122862029.

Almost surely, 2^25555280504 is an apocalyptic number.

It is an amenable number.

25555280504 is an abundant number, since it is smaller than the sum of its proper divisors (26046728416).

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

25555280504 is a wasteful number, since it uses less digits than its factorization.

25555280504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 245723870 (or 245723866 counting only the distinct ones).

The product of its (nonzero) digits is 400000, while the sum is 41.

The spelling of 25555280504 in words is "twenty-five billion, five hundred fifty-five million, two hundred eighty thousand, five hundred four".