25552755769 has 2 divisors, whose sum is σ = 25552755770. Its totient is φ = 25552755768.

The previous prime is 25552755713. The next prime is 25552755773. The reversal of 25552755769 is 96755725552.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25542432400 + 10323369 = 159820^2 + 3213^2 .

It is a cyclic number.

It is not a de Polignac number, because 25552755769 - 2³³ = 16962821177 is a prime.

It is a super-2 number, since 2×25552755769² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (25552755469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12776377884 + 12776377885.

It is an arithmetic number, because the mean of its divisors is an integer number (12776377885).

Almost surely, 2^25552755769 is an apocalyptic number.

It is an amenable number.

25552755769 is a deficient number, since it is larger than the sum of its proper divisors (1).

25552755769 is an equidigital number, since it uses as much as digits as its factorization.

25552755769 is an evil number, because the sum of its binary digits is even.

The product of its digits is 33075000, while the sum is 58.

The spelling of 25552755769 in words is "twenty-five billion, five hundred fifty-two million, seven hundred fifty-five thousand, seven hundred sixty-nine".