2525905690 has 64 divisors (see below), whose sum is σ = 5761559808. Its totient is φ = 774374400.

The previous prime is 2525905601. The next prime is 2525905721. The reversal of 2525905690 is 965095252.

It is a super-2 number, since 2×2525905690² = 12760399109548752200, which contains 22 as substring.

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, 20082 + ... + 73858.

It is an arithmetic number, because the mean of its divisors is an integer number (90024372).

Almost surely, 2^2525905690 is an apocalyptic number.

2525905690 is an abundant number, since it is smaller than the sum of its proper divisors (3235654118).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2525905690 is a wasteful number, since it uses less digits than its factorization.

2525905690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53863.

The product of its (nonzero) digits is 243000, while the sum is 43.

The square root of 2525905690 is about 50258.3892499551. The cubic root of 2525905690 is about 1361.8806324418.

The spelling of 2525905690 in words is "two billion, five hundred twenty-five million, nine hundred five thousand, six hundred ninety".