20125522 has 8 divisors (see below), whose sum is σ = 31777200. Its totient is φ = 9533124.

The previous prime is 20125519. The next prime is 20125537. The reversal of 20125522 is 22552102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a self number, because there is not a number n which added to its sum of digits gives 20125522.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 264772 + ... + 264847.

It is an arithmetic number, because the mean of its divisors is an integer number (3972150).

Almost surely, 2^20125522 is an apocalyptic number.

20125522 is a deficient number, since it is larger than the sum of its proper divisors (11651678).

20125522 is a wasteful number, since it uses less digits than its factorization.

20125522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 529640.

The product of its (nonzero) digits is 400, while the sum is 19.

The square root of 20125522 is about 4486.1477906997. The cubic root of 20125522 is about 272.0084430049.

Adding to 20125522 its reverse (22552102), we get a palindrome (42677624).

The spelling of 20125522 in words is "twenty million, one hundred twenty-five thousand, five hundred twenty-two".