2164423106025 has 18 divisors (see below), whose sum is σ = 3876722274750. Its totient is φ = 1154358989760.

The previous prime is 2164423105991. The next prime is 2164423106071. The reversal of 2164423106025 is 5206013244612.

2164423106025 is a `hidden beast` number, since 2 + 1 + 6 + 4 + 42 + 3 + 1 + 0 + 602 + 5 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 747035233344 + 1417387872681 = 864312^2 + 1190541^2 .

It is not a de Polignac number, because 2164423106025 - 2⁸ = 2164423105769 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 4809828900 + ... + 4809829349.

Almost surely, 2^{2164423106025} is an apocalyptic number.

2164423106025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2164423106025 is a deficient number, since it is larger than the sum of its proper divisors (1712299168725).

2164423106025 is a wasteful number, since it uses less digits than its factorization.

2164423106025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9619658265 (or 9619658257 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 36.

The spelling of 2164423106025 in words is "two trillion, one hundred sixty-four billion, four hundred twenty-three million, one hundred six thousand, twenty-five".