25106382887 has 12 divisors (see below), whose sum is σ = 26554724640. Its totient is φ = 23733464832.

The previous prime is 25106382881. The next prime is 25106382979. The reversal of 25106382887 is 78828360152.

It is a happy number.

It is not a de Polignac number, because 25106382887 - 2⁴ = 25106382871 is a prime.

It is a Smith number, since the sum of its digits (50) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25106382881) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 92039 + ... + 242247.

It is an arithmetic number, because the mean of its divisors is an integer number (2212893720).

Almost surely, 2^25106382887 is an apocalyptic number.

25106382887 is a deficient number, since it is larger than the sum of its proper divisors (1448341753).

25106382887 is a wasteful number, since it uses less digits than its factorization.

25106382887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150710 (or 150691 counting only the distinct ones).

The product of its (nonzero) digits is 1290240, while the sum is 50.

The spelling of 25106382887 in words is "twenty-five billion, one hundred six million, three hundred eighty-two thousand, eight hundred eighty-seven".