25550525028 has 48 divisors (see below), whose sum is σ = 68155597440. Its totient is φ = 7297914624.

The previous prime is 25550525027. The next prime is 25550525029. The reversal of 25550525028 is 82052505552.

It is an interprime number because it is at equal distance from previous prime (25550525027) and next prime (25550525029).

It is not an unprimeable number, because it can be changed into a prime (25550525027) 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, 239800 + ... + 329552.

It is an arithmetic number, because the mean of its divisors is an integer number (1419908280).

Almost surely, 2^25550525028 is an apocalyptic number.

25550525028 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

25550525028 is an abundant number, since it is smaller than the sum of its proper divisors (42605072412).

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

25550525028 is a wasteful number, since it uses less digits than its factorization.

25550525028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93156 (or 93154 counting only the distinct ones).

The product of its (nonzero) digits is 200000, while the sum is 39.

The spelling of 25550525028 in words is "twenty-five billion, five hundred fifty million, five hundred twenty-five thousand, twenty-eight".