25887173290 has 64 divisors (see below), whose sum is σ = 51720975360. Its totient is φ = 9249408000.

The previous prime is 25887173281. The next prime is 25887173303. The reversal of 25887173290 is 9237178852.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9989895 + ... + 9992485.

It is an arithmetic number, because the mean of its divisors is an integer number (808140240).

Almost surely, 2^25887173290 is an apocalyptic number.

25887173290 is a deficient number, since it is larger than the sum of its proper divisors (25833802070).

25887173290 is a wasteful number, since it uses less digits than its factorization.

25887173290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4159.

The product of its (nonzero) digits is 1693440, while the sum is 52.

The spelling of 25887173290 in words is "twenty-five billion, eight hundred eighty-seven million, one hundred seventy-three thousand, two hundred ninety".