22510425 has 48 divisors (see below), whose sum is σ = 43390080. Its totient is φ = 10083840.

The previous prime is 22510417. The next prime is 22510451. The reversal of 22510425 is 52401522.

It is a happy number.

It is not a de Polignac number, because 22510425 - 2³ = 22510417 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 27421 + ... + 28229.

It is an arithmetic number, because the mean of its divisors is an integer number (903960).

Almost surely, 2^22510425 is an apocalyptic number.

22510425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

22510425 is a deficient number, since it is larger than the sum of its proper divisors (20879655).

22510425 is a wasteful number, since it uses less digits than its factorization.

22510425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 882 (or 877 counting only the distinct ones).

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

The square root of 22510425 is about 4744.5152544807. The cubic root of 22510425 is about 282.3544032681.

Adding to 22510425 its reverse (52401522), we get a palindrome (74911947).

The spelling of 22510425 in words is "twenty-two million, five hundred ten thousand, four hundred twenty-five".