2523555225 has 81 divisors (see below), whose sum is σ = 4825985047. Its totient is φ = 1260295680.

The previous prime is 2523555179. The next prime is 2523555277. The reversal of 2523555225 is 5225553252.

The square root of 2523555225 is 50235.

It is a perfect power (a square), and thus also a powerful number.

2523555225 is a `hidden beast` number, since 2 + 52 + 35 + 552 + 25 = 666.

2523555225 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 13 ways, for example, as 301401 + 2523253824 = 549^2 + 50232^2 .

It is not a de Polignac number, because 2523555225 - 2¹⁵ = 2523522457 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2523555225.

It is an unprimeable number.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 12809827 + ... + 12810023.

Almost surely, 2^2523555225 is an apocalyptic number.

2523555225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

2523555225 is the 50235-th square number.

2523555225 is the 25118-th centered octagonal number.

It is an amenable number.

2523555225 is a deficient number, since it is larger than the sum of its proper divisors (2302429822).

2523555225 is a wasteful number, since it uses less digits than its factorization.

2523555225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 444 (or 222 counting only the distinct ones).

The product of its digits is 150000, while the sum is 36.

The cubic root of 2523555225 is about 1361.4580716426.

Multiplying 2523555225 by its sum of digits (36), we get a square (90847988100 = 301410²).

The spelling of 2523555225 in words is "two billion, five hundred twenty-three million, five hundred fifty-five thousand, two hundred twenty-five".