25642194 has 16 divisors (see below), whose sum is σ = 53514432. Its totient is φ = 8175728.

The previous prime is 25642193. The next prime is 25642207. The reversal of 25642194 is 49124652.

It is a super-2 number, since 2×25642194² = 1315044226267272, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (25642193) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 92769 + ... + 93044.

It is an arithmetic number, because the mean of its divisors is an integer number (3344652).

Almost surely, 2^25642194 is an apocalyptic number.

25642194 is an abundant number, since it is smaller than the sum of its proper divisors (27872238).

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

25642194 is a wasteful number, since it uses less digits than its factorization.

25642194 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185841.

The product of its digits is 17280, while the sum is 33.

The square root of 25642194 is about 5063.8122003092. The cubic root of 25642194 is about 294.8843518725.

The spelling of 25642194 in words is "twenty-five million, six hundred forty-two thousand, one hundred ninety-four".