25528259 has 2 divisors, whose sum is σ = 25528260. Its totient is φ = 25528258.

The previous prime is 25528249. The next prime is 25528301. The reversal of 25528259 is 95282552.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25528259 is a prime.

It is not a weakly prime, because it can be changed into another prime (25528249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12764129 + 12764130.

It is an arithmetic number, because the mean of its divisors is an integer number (12764130).

Almost surely, 2^25528259 is an apocalyptic number.

25528259 is a deficient number, since it is larger than the sum of its proper divisors (1).

25528259 is an equidigital number, since it uses as much as digits as its factorization.

25528259 is an evil number, because the sum of its binary digits is even.

The product of its digits is 72000, while the sum is 38.

The square root of 25528259 is about 5052.5497523528. The cubic root of 25528259 is about 294.4469538755.

The spelling of 25528259 in words is "twenty-five million, five hundred twenty-eight thousand, two hundred fifty-nine".