22125145222520 has 32 divisors (see below), whose sum is σ = 49912926591600. Its totient is φ = 8826707006208.

The previous prime is 22125145222517. The next prime is 22125145222601. The reversal of 22125145222520 is 2522254152122.

It is a super-2 number, since 2×22125145222520² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 729705989 + ... + 729736308.

Almost surely, 2^{22125145222520} is an apocalyptic number.

22125145222520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22125145222520 is an abundant number, since it is smaller than the sum of its proper divisors (27787781369080).

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

22125145222520 is a wasteful number, since it uses less digits than its factorization.

22125145222520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1459442687 (or 1459442683 counting only the distinct ones).

The product of its (nonzero) digits is 64000, while the sum is 35.

Adding to 22125145222520 its reverse (2522254152122), we get a palindrome (24647399374642).

The spelling of 22125145222520 in words is "twenty-two trillion, one hundred twenty-five billion, one hundred forty-five million, two hundred twenty-two thousand, five hundred twenty".