2185270125 has 32 divisors (see below), whose sum is σ = 3639302784. Its totient is φ = 1164512000.

The previous prime is 2185270069. The next prime is 2185270141. The reversal of 2185270125 is 5210725812.

It is not a de Polignac number, because 2185270125 - 2⁸ = 2185269869 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 902917 + ... + 905333.

It is an arithmetic number, because the mean of its divisors is an integer number (113728212).

Almost surely, 2^2185270125 is an apocalyptic number.

2185270125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2185270125 is a deficient number, since it is larger than the sum of its proper divisors (1454032659).

2185270125 is a wasteful number, since it uses less digits than its factorization.

2185270125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4846 (or 4836 counting only the distinct ones).

The product of its (nonzero) digits is 11200, while the sum is 33.

The square root of 2185270125 is about 46746.8728900661. The cubic root of 2185270125 is about 1297.6822854888.

Adding to 2185270125 its reverse (5210725812), we get a palindrome (7395995937).

The spelling of 2185270125 in words is "two billion, one hundred eighty-five million, two hundred seventy thousand, one hundred twenty-five".