25550550536 has 16 divisors (see below), whose sum is σ = 54751179840. Its totient is φ = 10950235920.

The previous prime is 25550550511. The next prime is 25550550541. The reversal of 25550550536 is 63505505552.

It is a junction number, because it is equal to n+sod(n) for n = 25550550493 and 25550550502.

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, 228129860 + ... + 228129971.

It is an arithmetic number, because the mean of its divisors is an integer number (3421948740).

Almost surely, 2^25550550536 is an apocalyptic number.

It is an amenable number.

25550550536 is an abundant number, since it is smaller than the sum of its proper divisors (29200629304).

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

25550550536 is a wasteful number, since it uses less digits than its factorization.

25550550536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 456259844 (or 456259840 counting only the distinct ones).

The product of its (nonzero) digits is 562500, while the sum is 41.

The spelling of 25550550536 in words is "twenty-five billion, five hundred fifty million, five hundred fifty thousand, five hundred thirty-six".