25055525550 has 48 divisors (see below), whose sum is σ = 67786589952. Its totient is φ = 6074066400.

The previous prime is 25055525507. The next prime is 25055525557. The reversal of 25055525550 is 5552555052.

It is a junction number, because it is equal to n+sod(n) for n = 25055525499 and 25055525508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25055525557) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7590934 + ... + 7594233.

It is an arithmetic number, because the mean of its divisors is an integer number (1412220624).

Almost surely, 2^25055525550 is an apocalyptic number.

25055525550 is an abundant number, since it is smaller than the sum of its proper divisors (42731064402).

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

25055525550 is a wasteful number, since it uses less digits than its factorization.

25055525550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15185193 (or 15185188 counting only the distinct ones).

The product of its (nonzero) digits is 312500, while the sum is 39.

It can be divided in two parts, 250555255 and 50, that added together give a triangular number (250555305 = T₂₂₃₈₅).

The spelling of 25055525550 in words is "twenty-five billion, fifty-five million, five hundred twenty-five thousand, five hundred fifty".