25244797166 has 4 divisors (see below), whose sum is σ = 37867195752. Its totient is φ = 12622398582.

The previous prime is 25244797153. The next prime is 25244797199. The reversal of 25244797166 is 66179744252.

It is a semiprime because it is the product of two primes.

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 as a sum of consecutive naturals, namely, 6311199290 + ... + 6311199293.

It is an arithmetic number, because the mean of its divisors is an integer number (9466798938).

Almost surely, 2^25244797166 is an apocalyptic number.

25244797166 is a deficient number, since it is larger than the sum of its proper divisors (12622398586).

25244797166 is a wasteful number, since it uses less digits than its factorization.

25244797166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12622398585.

The product of its digits is 5080320, while the sum is 53.

The spelling of 25244797166 in words is "twenty-five billion, two hundred forty-four million, seven hundred ninety-seven thousand, one hundred sixty-six".