2164136525 has 12 divisors (see below), whose sum is σ = 2708612352. Its totient is φ = 1715126640.

The previous prime is 2164136509. The next prime is 2164136593. The reversal of 2164136525 is 5256314612.

It is not a de Polignac number, because 2164136525 - 2⁴ = 2164136509 is a prime.

It is a hoax number, since the sum of its digits (35) coincides with the sum of the digits of its distinct prime factors.

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, 401837 + ... + 407186.

It is an arithmetic number, because the mean of its divisors is an integer number (225717696).

Almost surely, 2^2164136525 is an apocalyptic number.

2164136525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2164136525 is a deficient number, since it is larger than the sum of its proper divisors (544475827).

2164136525 is a wasteful number, since it uses less digits than its factorization.

2164136525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 809140 (or 809135 counting only the distinct ones).

The product of its digits is 43200, while the sum is 35.

The square root of 2164136525 is about 46520.2807923598. The cubic root of 2164136525 is about 1293.4854612491.

The spelling of 2164136525 in words is "two billion, one hundred sixty-four million, one hundred thirty-six thousand, five hundred twenty-five".