25165222 has 4 divisors (see below), whose sum is σ = 37747836. Its totient is φ = 12582610.

The previous prime is 25165193. The next prime is 25165237. The reversal of 25165222 is 22256152.

It is a happy number.

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 (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6291304 + ... + 6291307.

It is an arithmetic number, because the mean of its divisors is an integer number (9436959).

Almost surely, 2^25165222 is an apocalyptic number.

25165222 is a deficient number, since it is larger than the sum of its proper divisors (12582614).

25165222 is a wasteful number, since it uses less digits than its factorization.

25165222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12582613.

The product of its digits is 2400, while the sum is 25.

The square root of 25165222 is about 5016.4949915255. The cubic root of 25165222 is about 293.0445093848.

The spelling of 25165222 in words is "twenty-five million, one hundred sixty-five thousand, two hundred twenty-two".