22025100164165 has 12 divisors (see below), whose sum is σ = 30745241862156. Its totient is φ = 15102925826688.

The previous prime is 22025100164143. The next prime is 22025100164183. The reversal of 22025100164165 is 56146100152022.

It can be written as a sum of positive squares in 2 ways, for example, as 5586600232801 + 16438499931364 = 2363599^2 + 4054442^2 .

It is not a de Polignac number, because 22025100164165 - 2¹⁸ = 22025099902021 is a prime.

It is a super-2 number, since 2×22025100164165² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 44949183764 + ... + 44949184253.

It is an arithmetic number, because the mean of its divisors is an integer number (2562103488513).

Almost surely, 2^{22025100164165} is an apocalyptic number.

It is an amenable number.

22025100164165 is a deficient number, since it is larger than the sum of its proper divisors (8720141697991).

22025100164165 is an equidigital number, since it uses as much as digits as its factorization.

22025100164165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89898368036 (or 89898368029 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 35.

The spelling of 22025100164165 in words is "twenty-two trillion, twenty-five billion, one hundred million, one hundred sixty-four thousand, one hundred sixty-five".