25761777755 has 16 divisors (see below), whose sum is σ = 35335130304. Its totient is φ = 17662872960.

The previous prime is 25761777667. The next prime is 25761777761. The reversal of 25761777755 is 55777716752.

It is not a de Polignac number, because 25761777755 - 2⁸ = 25761777499 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25761777694 and 25761777703.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 242969 + ... + 332501.

It is an arithmetic number, because the mean of its divisors is an integer number (2208445644).

Almost surely, 2^25761777755 is an apocalyptic number.

25761777755 is a deficient number, since it is larger than the sum of its proper divisors (9573352549).

25761777755 is an equidigital number, since it uses as much as digits as its factorization.

25761777755 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97766.

The product of its digits is 25210500, while the sum is 59.

The spelling of 25761777755 in words is "twenty-five billion, seven hundred sixty-one million, seven hundred seventy-seven thousand, seven hundred fifty-five".