26887800625 has 45 divisors (see below), whose sum is σ = 39126302919. Its totient is φ = 18417672000.

The previous prime is 26887800601. The next prime is 26887800659. The reversal of 26887800625 is 52600878862.

The square root of 26887800625 is 163975.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 7 ways, for example, as 26814390001 + 73410624 = 163751^2 + 8568^2 .

It is not a de Polignac number, because 26887800625 - 2⁷ = 26887800497 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 28695157 + ... + 28696093.

Almost surely, 2^26887800625 is an apocalyptic number.

26887800625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

26887800625 is the 163975-th square number.

26887800625 is the 81988-th centered octagonal number.

It is an amenable number.

26887800625 is a deficient number, since it is larger than the sum of its proper divisors (12238502294).

26887800625 is an frugal number, since it uses more digits than its factorization.

26887800625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1908 (or 949 counting only the distinct ones).

The product of its (nonzero) digits is 2580480, while the sum is 52.

The spelling of 26887800625 in words is "twenty-six billion, eight hundred eighty-seven million, eight hundred thousand, six hundred twenty-five".