2687890625 has 36 divisors (see below), whose sum is σ = 3843748032. Its totient is φ = 1841250000.

The previous prime is 2687890591. The next prime is 2687890633. The reversal of 2687890625 is 5260987862.

It is not a de Polignac number, because 2687890625 - 2²⁴ = 2671113409 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 2733884 + ... + 2734866.

Almost surely, 2^2687890625 is an apocalyptic number.

2687890625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2687890625 is a deficient number, since it is larger than the sum of its proper divisors (1155857407).

2687890625 is an frugal number, since it uses more digits than its factorization.

2687890625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1030 (or 995 counting only the distinct ones).

The product of its (nonzero) digits is 2903040, while the sum is 53.

The square root of 2687890625 is about 51844.8707684762. The cubic root of 2687890625 is about 1390.3917990473.

The spelling of 2687890625 in words is "two billion, six hundred eighty-seven million, eight hundred ninety thousand, six hundred twenty-five".