26959408140025 has 9 divisors (see below), whose sum is σ = 33429698285581. Its totient is φ = 21567505743040.

The previous prime is 26959408140019. The next prime is 26959408140113. The reversal of 26959408140025 is 52004180495962.

The square root of 26959408140025 is 5192245.

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

It can be written as a sum of positive squares in 4 ways, for example, as 11576414222569 + 15382993917456 = 3402413^2 + 3922116^2 .

It is not a de Polignac number, because 26959408140025 - 2⁹ = 26959408139513 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 25442001 + ... + 26480449.

Almost surely, 2^{26959408140025} is an apocalyptic number.

26959408140025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

26959408140025 is the 5192245-th square number.

26959408140025 is the 2596123-rd centered octagonal number.

It is an amenable number.

26959408140025 is a deficient number, since it is larger than the sum of its proper divisors (6470290145556).

26959408140025 is an frugal number, since it uses more digits than its factorization.

26959408140025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2076908 (or 1038454 counting only the distinct ones).

The product of its (nonzero) digits is 6220800, while the sum is 55.

The spelling of 26959408140025 in words is "twenty-six trillion, nine hundred fifty-nine billion, four hundred eight million, one hundred forty thousand, twenty-five".