26549139425 has 12 divisors (see below), whose sum is σ = 32929480176. Its totient is φ = 21233797200.

The previous prime is 26549139403. The next prime is 26549139473. The reversal of 26549139425 is 52493194562.

It is not a de Polignac number, because 26549139425 - 2²⁴ = 26532362209 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 11 ways as a sum of consecutive naturals, for example, 38231 + ... + 233580.

It is an arithmetic number, because the mean of its divisors is an integer number (2744123348).

Almost surely, 2^26549139425 is an apocalyptic number.

26549139425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

26549139425 is a deficient number, since it is larger than the sum of its proper divisors (6380340751).

26549139425 is a wasteful number, since it uses less digits than its factorization.

26549139425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 275728 (or 275723 counting only the distinct ones).

The product of its digits is 2332800, while the sum is 50.

The spelling of 26549139425 in words is "twenty-six billion, five hundred forty-nine million, one hundred thirty-nine thousand, four hundred twenty-five".