25775516505 has 32 divisors (see below), whose sum is σ = 41818636800. Its totient is φ = 13555187712.

The previous prime is 25775516483. The next prime is 25775516549. The reversal of 25775516505 is 50561557752.

It is not a de Polignac number, because 25775516505 - 2²⁸ = 25507081049 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 463641 + ... + 516249.

It is an arithmetic number, because the mean of its divisors is an integer number (1306832400).

Almost surely, 2^25775516505 is an apocalyptic number.

It is an amenable number.

25775516505 is a deficient number, since it is larger than the sum of its proper divisors (16043120295).

25775516505 is a wasteful number, since it uses less digits than its factorization.

25775516505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53073.

The product of its (nonzero) digits is 1837500, while the sum is 48.

The spelling of 25775516505 in words is "twenty-five billion, seven hundred seventy-five million, five hundred sixteen thousand, five hundred five".