25753552697 has 2 divisors, whose sum is σ = 25753552698. Its totient is φ = 25753552696.

The previous prime is 25753552651. The next prime is 25753552723. The reversal of 25753552697 is 79625535752.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25282272016 + 471280681 = 159004^2 + 21709^2 .

It is a cyclic number.

It is not a de Polignac number, because 25753552697 - 2²⁴ = 25736775481 is a prime.

It is not a weakly prime, because it can be changed into another prime (25753552897) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12876776348 + 12876776349.

It is an arithmetic number, because the mean of its divisors is an integer number (12876776349).

Almost surely, 2^25753552697 is an apocalyptic number.

It is an amenable number.

25753552697 is a deficient number, since it is larger than the sum of its proper divisors (1).

25753552697 is an equidigital number, since it uses as much as digits as its factorization.

25753552697 is an evil number, because the sum of its binary digits is even.

The product of its digits is 19845000, while the sum is 56.

The spelling of 25753552697 in words is "twenty-five billion, seven hundred fifty-three million, five hundred fifty-two thousand, six hundred ninety-seven".