22455425 has 24 divisors (see below), whose sum is σ = 29462400. Its totient is φ = 16950080.

The previous prime is 22455421. The next prime is 22455437. The reversal of 22455425 is 52455422.

It is not a de Polignac number, because 22455425 - 2² = 22455421 is a prime.

It is a super-2 number, since 2×22455425² = 1008492223861250, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is not an unprimeable number, because it can be changed into a prime (22455421) 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, 33746 + ... + 34404.

It is an arithmetic number, because the mean of its divisors is an integer number (1227600).

Almost surely, 2^22455425 is an apocalyptic number.

22455425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

22455425 is a deficient number, since it is larger than the sum of its proper divisors (7006975).

22455425 is a wasteful number, since it uses less digits than its factorization.

22455425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 745 (or 740 counting only the distinct ones).

The product of its digits is 16000, while the sum is 29.

The square root of 22455425 is about 4738.7155432670. The cubic root of 22455425 is about 282.1242557227.

The spelling of 22455425 in words is "twenty-two million, four hundred fifty-five thousand, four hundred twenty-five".