2100704625 has 56 divisors (see below), whose sum is σ = 3930891432. Its totient is φ = 1120327200.

The previous prime is 2100704579. The next prime is 2100704629. The reversal of 2100704625 is 5264070012.

It can be written as a sum of positive squares in 4 ways, for example, as 11209104 + 2089495521 = 3348^2 + 45711^2 .

It is not a de Polignac number, because 2100704625 - 2⁶ = 2100704561 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (2100704629) by changing a digit.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 79599 + ... + 102651.

Almost surely, 2^2100704625 is an apocalyptic number.

2100704625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2100704625 is a deficient number, since it is larger than the sum of its proper divisors (1830186807).

2100704625 is an frugal number, since it uses more digits than its factorization.

2100704625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23086 (or 23061 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The square root of 2100704625 is about 45833.4443938048. Note that the first 3 decimals coincide. The cubic root of 2100704625 is about 1280.7223756529.

Adding to 2100704625 its reverse (5264070012), we get a palindrome (7364774637).

The spelling of 2100704625 in words is "two billion, one hundred million, seven hundred four thousand, six hundred twenty-five".