25028027569 has 2 divisors, whose sum is σ = 25028027570. Its totient is φ = 25028027568.

The previous prime is 25028027527. The next prime is 25028027593. The reversal of 25028027569 is 96572082052.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19512737344 + 5515290225 = 139688^2 + 74265^2 .

It is a cyclic number.

It is not a de Polignac number, because 25028027569 - 2²¹ = 25025930417 is a prime.

It is a super-2 number, since 2×25028027569² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (25028027509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12514013784 + 12514013785.

It is an arithmetic number, because the mean of its divisors is an integer number (12514013785).

Almost surely, 2^25028027569 is an apocalyptic number.

It is an amenable number.

25028027569 is a deficient number, since it is larger than the sum of its proper divisors (1).

25028027569 is an equidigital number, since it uses as much as digits as its factorization.

25028027569 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 604800, while the sum is 46.

The spelling of 25028027569 in words is "twenty-five billion, twenty-eight million, twenty-seven thousand, five hundred sixty-nine".