25753437869 has 2 divisors, whose sum is σ = 25753437870. Its totient is φ = 25753437868.

The previous prime is 25753437817. The next prime is 25753437883. The reversal of 25753437869 is 96873435752.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25070922244 + 682515625 = 158338^2 + 26125^2 .

It is a cyclic number.

It is not a de Polignac number, because 25753437869 - 2³² = 21458470573 is a prime.

It is a super-2 number, since 2×25753437869² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25753437469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12876718934 + 12876718935.

It is an arithmetic number, because the mean of its divisors is an integer number (12876718935).

Almost surely, 2^25753437869 is an apocalyptic number.

It is an amenable number.

25753437869 is a deficient number, since it is larger than the sum of its proper divisors (1).

25753437869 is an equidigital number, since it uses as much as digits as its factorization.

25753437869 is an evil number, because the sum of its binary digits is even.

The product of its digits is 38102400, while the sum is 59.

The spelling of 25753437869 in words is "twenty-five billion, seven hundred fifty-three million, four hundred thirty-seven thousand, eight hundred sixty-nine".