22501425 has 24 divisors (see below), whose sum is σ = 37631520. Its totient is φ = 11862400.

The previous prime is 22501403. The next prime is 22501441. The reversal of 22501425 is 52410522.

It is a happy number.

It is not a de Polignac number, because 22501425 - 2⁹ = 22500913 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4990 + ... + 8360.

It is an arithmetic number, because the mean of its divisors is an integer number (1567980).

Almost surely, 2^22501425 is an apocalyptic number.

22501425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

22501425 is a deficient number, since it is larger than the sum of its proper divisors (15130095).

22501425 is a wasteful number, since it uses less digits than its factorization.

22501425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3473 (or 3468 counting only the distinct ones).

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

The square root of 22501425 is about 4743.5666960632. The cubic root of 22501425 is about 282.3167684333.

Adding to 22501425 its reverse (52410522), we get a palindrome (74911947).

The spelling of 22501425 in words is "twenty-two million, five hundred one thousand, four hundred twenty-five".