25223190 has 32 divisors (see below), whose sum is σ = 60673536. Its totient is φ = 6710880.

The previous prime is 25223183. The next prime is 25223197. The reversal of 25223190 is 9132252.

It is an interprime number because it is at equal distance from previous prime (25223183) and next prime (25223197).

It is a super-2 number, since 2×25223190² = 1272418627552200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 25223190.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25223197) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19875 + ... + 21105.

It is an arithmetic number, because the mean of its divisors is an integer number (1896048).

Almost surely, 2^25223190 is an apocalyptic number.

25223190 is an abundant number, since it is smaller than the sum of its proper divisors (35450346).

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

25223190 is a wasteful number, since it uses less digits than its factorization.

25223190 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1924.

The product of its (nonzero) digits is 1080, while the sum is 24.

The square root of 25223190 is about 5022.2694073496. The cubic root of 25223190 is about 293.2693458339.

The spelling of 25223190 in words is "twenty-five million, two hundred twenty-three thousand, one hundred ninety".