25015489158 has 16 divisors (see below), whose sum is σ = 54579249216. Its totient is φ = 7580451240.

The previous prime is 25015489139. The next prime is 25015489159. The reversal of 25015489158 is 85198451052.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25015489159) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 189511216 + ... + 189511347.

It is an arithmetic number, because the mean of its divisors is an integer number (3411203076).

Almost surely, 2^25015489158 is an apocalyptic number.

25015489158 is an abundant number, since it is smaller than the sum of its proper divisors (29563760058).

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

25015489158 is a wasteful number, since it uses less digits than its factorization.

25015489158 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 379022579.

The product of its (nonzero) digits is 576000, while the sum is 48.

The spelling of 25015489158 in words is "twenty-five billion, fifteen million, four hundred eighty-nine thousand, one hundred fifty-eight".