25590545975 has 18 divisors (see below), whose sum is σ = 32187687624. Its totient is φ = 20178776800.

The previous prime is 25590545909. The next prime is 25590545987. The reversal of 25590545975 is 57954509552.

It is a happy number.

It is not a de Polignac number, because 25590545975 - 2³² = 21295578679 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 25590545975.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 6737777 + ... + 6741573.

It is an arithmetic number, because the mean of its divisors is an integer number (1788204868).

Almost surely, 2^25590545975 is an apocalyptic number.

25590545975 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

25590545975 is a deficient number, since it is larger than the sum of its proper divisors (6597141649).

25590545975 is an frugal number, since it uses more digits than its factorization.

25590545975 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7675 (or 3873 counting only the distinct ones).

The product of its (nonzero) digits is 14175000, while the sum is 56.

The spelling of 25590545975 in words is "twenty-five billion, five hundred ninety million, five hundred forty-five thousand, nine hundred seventy-five".