2500085864 has 16 divisors (see below), whose sum is σ = 4801994820. Its totient is φ = 1219553920.

The previous prime is 2500085837. The next prime is 2500085879. The reversal of 2500085864 is 4685800052.

It can be written as a sum of positive squares in 2 ways, for example, as 2499000100 + 1085764 = 49990^2 + 1042^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3810779 + ... + 3811434.

Almost surely, 2^2500085864 is an apocalyptic number.

It is an amenable number.

2500085864 is a deficient number, since it is larger than the sum of its proper divisors (2301908956).

2500085864 is a wasteful number, since it uses less digits than its factorization.

2500085864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7622260 (or 7622256 counting only the distinct ones).

The product of its (nonzero) digits is 76800, while the sum is 38.

The square root of 2500085864 is about 50000.8586326275. The cubic root of 2500085864 is about 1357.2243461699.

The spelling of 2500085864 in words is "two billion, five hundred million, eighty-five thousand, eight hundred sixty-four".