22525401 has 4 divisors (see below), whose sum is σ = 30033872. Its totient is φ = 15016932.

The previous prime is 22525397. The next prime is 22525411. The reversal of 22525401 is 10452522.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 22525401 - 2² = 22525397 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22525411) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3754231 + ... + 3754236.

It is an arithmetic number, because the mean of its divisors is an integer number (7508468).

Almost surely, 2^22525401 is an apocalyptic number.

It is an amenable number.

22525401 is a deficient number, since it is larger than the sum of its proper divisors (7508471).

22525401 is an equidigital number, since it uses as much as digits as its factorization.

22525401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7508470.

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 22525401 is about 4746.0932354938. The cubic root of 22525401 is about 282.4170054054.

Adding to 22525401 its reverse (10452522), we get a palindrome (32977923).

The spelling of 22525401 in words is "twenty-two million, five hundred twenty-five thousand, four hundred one".