2161962525 has 24 divisors (see below), whose sum is σ = 3623418880. Its totient is φ = 1137248640.

The previous prime is 2161962511. The next prime is 2161962527. The reversal of 2161962525 is 5252691612.

2161962525 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2161962525 - 2²⁴ = 2145185309 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2161962527) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 191965 + ... + 202914.

Almost surely, 2^2161962525 is an apocalyptic number.

2161962525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2161962525 is a deficient number, since it is larger than the sum of its proper divisors (1461456355).

2161962525 is a wasteful number, since it uses less digits than its factorization.

2161962525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 394965 (or 394960 counting only the distinct ones).

The product of its digits is 64800, while the sum is 39.

The square root of 2161962525 is about 46496.9087682181. The cubic root of 2161962525 is about 1293.0521892098.

The spelling of 2161962525 in words is "two billion, one hundred sixty-one million, nine hundred sixty-two thousand, five hundred twenty-five".