2505656625 has 16 divisors (see below), whose sum is σ = 4169413248. Its totient is φ = 1336350000.

The previous prime is 2505656617. The next prime is 2505656627. The reversal of 2505656625 is 5266565052.

It is not a de Polignac number, because 2505656625 - 2³ = 2505656617 is a prime.

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (2505656627) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3340501 + ... + 3341250.

It is an arithmetic number, because the mean of its divisors is an integer number (260588328).

Almost surely, 2^2505656625 is an apocalyptic number.

2505656625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2505656625 is a deficient number, since it is larger than the sum of its proper divisors (1663756623).

2505656625 is an equidigital number, since it uses as much as digits as its factorization.

2505656625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6681769 (or 6681759 counting only the distinct ones).

The product of its (nonzero) digits is 540000, while the sum is 42.

The square root of 2505656625 is about 50056.5342887420. The cubic root of 2505656625 is about 1358.2316667314.

The spelling of 2505656625 in words is "two billion, five hundred five million, six hundred fifty-six thousand, six hundred twenty-five".