2638875025 has 12 divisors (see below), whose sum is σ = 3311631792. Its totient is φ = 2085663440.

The previous prime is 2638875017. The next prime is 2638875047. The reversal of 2638875025 is 5205788362.

It is a happy number.

It is not a de Polignac number, because 2638875025 - 2³ = 2638875017 is a prime.

It is a super-2 number, since 2×2638875025² = 13927322795137501250, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 633799 + ... + 637948.

It is an arithmetic number, because the mean of its divisors is an integer number (275969316).

Almost surely, 2^2638875025 is an apocalyptic number.

2638875025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2638875025 is a deficient number, since it is larger than the sum of its proper divisors (672756767).

2638875025 is a wasteful number, since it uses less digits than its factorization.

2638875025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1271840 (or 1271835 counting only the distinct ones).

The product of its (nonzero) digits is 806400, while the sum is 46.

The square root of 2638875025 is about 51369.9817500454. The cubic root of 2638875025 is about 1381.8883036316. Note that the first 3 decimals are identical.

The spelling of 2638875025 in words is "two billion, six hundred thirty-eight million, eight hundred seventy-five thousand, twenty-five".