22142525 has 12 divisors (see below), whose sum is σ = 28343424. Its totient is φ = 17142000.

The previous prime is 22142521. The next prime is 22142567. The reversal of 22142525 is 52524122.

It is not a de Polignac number, because 22142525 - 2² = 22142521 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22142525.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22142521) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13511 + ... + 15060.

It is an arithmetic number, because the mean of its divisors is an integer number (2361952).

Almost surely, 2^22142525 is an apocalyptic number.

22142525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

22142525 is a deficient number, since it is larger than the sum of its proper divisors (6200899).

22142525 is a wasteful number, since it uses less digits than its factorization.

22142525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28612 (or 28607 counting only the distinct ones).

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

The square root of 22142525 is about 4705.5844482912. The cubic root of 22142525 is about 280.8077229730.

Adding to 22142525 its reverse (52524122), we get a palindrome (74666647).

The spelling of 22142525 in words is "twenty-two million, one hundred forty-two thousand, five hundred twenty-five".