25850149916 has 12 divisors (see below), whose sum is σ = 45239081832. Its totient is φ = 12924697968.

The previous prime is 25850149879. The next prime is 25850149931. The reversal of 25850149916 is 61994105852.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 108491 + ... + 251933.

It is an arithmetic number, because the mean of its divisors is an integer number (3769923486).

Almost surely, 2^25850149916 is an apocalyptic number.

It is an amenable number.

25850149916 is a deficient number, since it is larger than the sum of its proper divisors (19388931916).

25850149916 is a wasteful number, since it uses less digits than its factorization.

25850149916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188500 (or 188498 counting only the distinct ones).

The product of its (nonzero) digits is 777600, while the sum is 50.

The spelling of 25850149916 in words is "twenty-five billion, eight hundred fifty million, one hundred forty-nine thousand, nine hundred sixteen".