22251425 has 24 divisors (see below), whose sum is σ = 32277696. Its totient is φ = 14898240.

The previous prime is 22251421. The next prime is 22251473. The reversal of 22251425 is 52415222.

It is not a de Polignac number, because 22251425 - 2² = 22251421 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22251425.

It is not an unprimeable number, because it can be changed into a prime (22251421) 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, 6047 + ... + 9003.

It is an arithmetic number, because the mean of its divisors is an integer number (1344904).

Almost surely, 2^22251425 is an apocalyptic number.

22251425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

22251425 is a deficient number, since it is larger than the sum of its proper divisors (10026271).

22251425 is a wasteful number, since it uses less digits than its factorization.

22251425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3017 (or 3012 counting only the distinct ones).

The product of its digits is 1600, while the sum is 23.

The square root of 22251425 is about 4717.1416133078. The cubic root of 22251425 is about 281.2673207440.

Adding to 22251425 its reverse (52415222), we get a palindrome (74666647).

The spelling of 22251425 in words is "twenty-two million, two hundred fifty-one thousand, four hundred twenty-five".