25769803775 has 6 divisors (see below), whose sum is σ = 31954556712. Its totient is φ = 20615843000.

The previous prime is 25769803751. The next prime is 25769803799. The reversal of 25769803775 is 57730896752.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (25769803751) and next prime (25769803799).

It is not a de Polignac number, because 25769803775 - 2³² = 21474836479 is a prime.

It is a Duffinian number.

It is a plaindrome in base 4, base 8 and base 16.

It is a zygodrome in base 4.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 515396051 + ... + 515396100.

It is an arithmetic number, because the mean of its divisors is an integer number (5325759452).

Almost surely, 2^25769803775 is an apocalyptic number.

25769803775 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

25769803775 is a deficient number, since it is larger than the sum of its proper divisors (6184752937).

25769803775 is a wasteful number, since it uses less digits than its factorization.

25769803775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1030792161 (or 1030792156 counting only the distinct ones).

The product of its (nonzero) digits is 22226400, while the sum is 59.

The spelling of 25769803775 in words is "twenty-five billion, seven hundred sixty-nine million, eight hundred three thousand, seven hundred seventy-five".