25550075500 has 48 divisors (see below), whose sum is σ = 56428444800. Its totient is φ = 10105180800.

The previous prime is 25550075479. The next prime is 25550075503. The reversal of 25550075500 is 557005552.

It is not an unprimeable number, because it can be changed into a prime (25550075503) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 242580 + ... + 331579.

It is an arithmetic number, because the mean of its divisors is an integer number (1175592600).

Almost surely, 2^25550075500 is an apocalyptic number.

25550075500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25550075500 is an abundant number, since it is smaller than the sum of its proper divisors (30878369300).

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

25550075500 is a wasteful number, since it uses less digits than its factorization.

25550075500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 574267 (or 574255 counting only the distinct ones).

The product of its (nonzero) digits is 43750, while the sum is 34.

The spelling of 25550075500 in words is "twenty-five billion, five hundred fifty million, seventy-five thousand, five hundred".