2153188725 has 24 divisors (see below), whose sum is σ = 3592612320. Its totient is φ = 1137827520.

The previous prime is 2153188721. The next prime is 2153188729. The reversal of 2153188725 is 5278813512.

It is an interprime number because it is at equal distance from previous prime (2153188721) and next prime (2153188729).

It is not a de Polignac number, because 2153188725 - 2² = 2153188721 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 (2153188721) 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, 123519 + ... + 139868.

It is an arithmetic number, because the mean of its divisors is an integer number (149692180).

Almost surely, 2^2153188725 is an apocalyptic number.

2153188725 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2153188725 is a deficient number, since it is larger than the sum of its proper divisors (1439423595).

2153188725 is a wasteful number, since it uses less digits than its factorization.

2153188725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263509 (or 263504 counting only the distinct ones).

The product of its digits is 134400, while the sum is 42.

The square root of 2153188725 is about 46402.4646435941. The cubic root of 2153188725 is about 1291.3006381982.

The spelling of 2153188725 in words is "two billion, one hundred fifty-three million, one hundred eighty-eight thousand, seven hundred twenty-five".