25257089 has 16 divisors (see below), whose sum is σ = 29816640. Its totient is φ = 21092160.

The previous prime is 25257077. The next prime is 25257101. The reversal of 25257089 is 98075252.

It is an interprime number because it is at equal distance from previous prime (25257077) and next prime (25257101).

It is a cyclic number.

It is not a de Polignac number, because 25257089 - 2¹⁶ = 25191553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25257989) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49367 + ... + 49875.

It is an arithmetic number, because the mean of its divisors is an integer number (1863540).

Almost surely, 2^25257089 is an apocalyptic number.

It is an amenable number.

25257089 is a deficient number, since it is larger than the sum of its proper divisors (4559551).

25257089 is a wasteful number, since it uses less digits than its factorization.

25257089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 880.

The product of its (nonzero) digits is 50400, while the sum is 38.

The square root of 25257089 is about 5025.6431429221. The cubic root of 25257089 is about 293.4006679386.

The spelling of 25257089 in words is "twenty-five million, two hundred fifty-seven thousand, eighty-nine".