25170294942 has 80 divisors (see below), whose sum is σ = 60817594992. Its totient is φ = 7734631680.

The previous prime is 25170294923. The next prime is 25170294983. The reversal of 25170294942 is 24949207152.

25170294942 is a `hidden beast` number, since 2 + 517 + 0 + 2 + 94 + 9 + 42 = 666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 1700598 + ... + 1715334.

Almost surely, 2^25170294942 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25170294942, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30408797496).

25170294942 is an abundant number, since it is smaller than the sum of its proper divisors (35647300050).

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

25170294942 is a wasteful number, since it uses less digits than its factorization.

25170294942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15575 (or 15566 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 45.

The spelling of 25170294942 in words is "twenty-five billion, one hundred seventy million, two hundred ninety-four thousand, nine hundred forty-two".