25528025269 has 2 divisors, whose sum is σ = 25528025270. Its totient is φ = 25528025268.

The previous prime is 25528025261. The next prime is 25528025291. The reversal of 25528025269 is 96252082552.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24896106225 + 631919044 = 157785^2 + 25138^2 .

It is a cyclic number.

It is not a de Polignac number, because 25528025269 - 2³ = 25528025261 is a prime.

It is a super-2 number, since 2×25528025269² (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 (25528025261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12764012634 + 12764012635.

It is an arithmetic number, because the mean of its divisors is an integer number (12764012635).

Almost surely, 2^25528025269 is an apocalyptic number.

It is an amenable number.

25528025269 is a deficient number, since it is larger than the sum of its proper divisors (1).

25528025269 is an equidigital number, since it uses as much as digits as its factorization.

25528025269 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864000, while the sum is 46.

The spelling of 25528025269 in words is "twenty-five billion, five hundred twenty-eight million, twenty-five thousand, two hundred sixty-nine".