25422090 has 32 divisors (see below), whose sum is σ = 61205760. Its totient is φ = 6757824.

The previous prime is 25422053. The next prime is 25422109. The reversal of 25422090 is 9022452.

It is a self number, because there is not a number n which added to its sum of digits gives 25422090.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 9856 + ... + 12164.

It is an arithmetic number, because the mean of its divisors is an integer number (1912680).

Almost surely, 2^25422090 is an apocalyptic number.

25422090 is an abundant number, since it is smaller than the sum of its proper divisors (35783670).

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

25422090 is a wasteful number, since it uses less digits than its factorization.

25422090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2686.

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 25422090 is about 5042.0323283375. The cubic root of 25422090 is about 294.0381967125.

The spelling of 25422090 in words is "twenty-five million, four hundred twenty-two thousand, ninety".