22165325525504 has 160 divisors (see below), whose sum is σ = 52622499194496. Its totient is φ = 9129403514880.

The previous prime is 22165325525489. The next prime is 22165325525509. The reversal of 22165325525504 is 40552552356122.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (22165325525509) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8719562 + ... + 10970934.

Almost surely, 2^{22165325525504} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22165325525504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26311249597248).

22165325525504 is an abundant number, since it is smaller than the sum of its proper divisors (30457173668992).

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

22165325525504 is an equidigital number, since it uses as much as digits as its factorization.

22165325525504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2251506 (or 2251490 counting only the distinct ones).

The product of its (nonzero) digits is 3600000, while the sum is 47.

The spelling of 22165325525504 in words is "twenty-two trillion, one hundred sixty-five billion, three hundred twenty-five million, five hundred twenty-five thousand, five hundred four".