22125510 has 48 divisors (see below), whose sum is σ = 62758800. Its totient is φ = 5363520.

The previous prime is 22125503. The next prime is 22125511. The reversal of 22125510 is 1552122.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22125511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10185 + ... + 12164.

It is an arithmetic number, because the mean of its divisors is an integer number (1307475).

Almost surely, 2^22125510 is an apocalyptic number.

22125510 is an abundant number, since it is smaller than the sum of its proper divisors (40633290).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22125510 is a wasteful number, since it uses less digits than its factorization.

22125510 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22373 (or 22370 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 18.

The square root of 22125510 is about 4703.7761426326. The cubic root of 22125510 is about 280.7357774328.

Adding to 22125510 its reverse (1552122), we get a palindrome (23677632).

The spelling of 22125510 in words is "twenty-two million, one hundred twenty-five thousand, five hundred ten".