22918425 has 24 divisors (see below), whose sum is σ = 38033280. Its totient is φ = 12177600.

The previous prime is 22918421. The next prime is 22918433. The reversal of 22918425 is 52481922.

It is not a de Polignac number, because 22918425 - 2² = 22918421 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22918421) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 31971 + ... + 32679.

It is an arithmetic number, because the mean of its divisors is an integer number (1584720).

Almost surely, 2^22918425 is an apocalyptic number.

22918425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

22918425 is a deficient number, since it is larger than the sum of its proper divisors (15114855).

22918425 is a wasteful number, since it uses less digits than its factorization.

22918425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1153 (or 1148 counting only the distinct ones).

The product of its digits is 11520, while the sum is 33.

The square root of 22918425 is about 4787.3191871861. The cubic root of 22918425 is about 284.0500845676.

The spelling of 22918425 in words is "twenty-two million, nine hundred eighteen thousand, four hundred twenty-five".