2161183525 has 12 divisors (see below), whose sum is σ = 2680792704. Its totient is φ = 1728350000.

The previous prime is 2161183517. The next prime is 2161183567. The reversal of 2161183525 is 5253811612.

It is not a de Polignac number, because 2161183525 - 2³ = 2161183517 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 67980 + ... + 94570.

It is an arithmetic number, because the mean of its divisors is an integer number (223399392).

Almost surely, 2^2161183525 is an apocalyptic number.

2161183525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2161183525 is a deficient number, since it is larger than the sum of its proper divisors (519609179).

2161183525 is a wasteful number, since it uses less digits than its factorization.

2161183525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29852 (or 29847 counting only the distinct ones).

The product of its digits is 14400, while the sum is 34.

The square root of 2161183525 is about 46488.5311125228. The cubic root of 2161183525 is about 1292.8968660331.

The spelling of 2161183525 in words is "two billion, one hundred sixty-one million, one hundred eighty-three thousand, five hundred twenty-five".