2525508081 has 12 divisors (see below), whose sum is σ = 3650005060. Its totient is φ = 1682726400.

The previous prime is 2525508071. The next prime is 2525508107. The reversal of 2525508081 is 1808055252.

2525508081 is a `hidden beast` number, since 2 + 525 + 50 + 8 + 0 + 81 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 155376225 + 2370131856 = 12465^2 + 48684^2 .

It is not a de Polignac number, because 2525508081 - 2⁶ = 2525508017 is a prime.

It is a super-2 number, since 2×2525508081² = 12756382134392605122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2525508071) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 61696 + ... + 94113.

Almost surely, 2^2525508081 is an apocalyptic number.

It is an amenable number.

2525508081 is a deficient number, since it is larger than the sum of its proper divisors (1124496979).

2525508081 is a wasteful number, since it uses less digits than its factorization.

2525508081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157616 (or 157613 counting only the distinct ones).

The product of its (nonzero) digits is 32000, while the sum is 36.

The square root of 2525508081 is about 50254.4334462145. The cubic root of 2525508081 is about 1361.8091697035.

The spelling of 2525508081 in words is "two billion, five hundred twenty-five million, five hundred eight thousand, eighty-one".