25257495 has 32 divisors (see below), whose sum is σ = 43962048. Its totient is φ = 12331008.

The previous prime is 25257443. The next prime is 25257497. The reversal of 25257495 is 59475252.

It is not a de Polignac number, because 25257495 - 2⁶ = 25257431 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25257497) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8097 + ... + 10773.

It is an arithmetic number, because the mean of its divisors is an integer number (1373814).

Almost surely, 2^25257495 is an apocalyptic number.

25257495 is a deficient number, since it is larger than the sum of its proper divisors (18704553).

25257495 is a wasteful number, since it uses less digits than its factorization.

25257495 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2739.

The product of its digits is 126000, while the sum is 39.

The square root of 25257495 is about 5025.6835355999. The cubic root of 25257495 is about 293.4022400390.

It can be divided in two parts, 25257 and 495, that added together give a palindrome (25752).

The spelling of 25257495 in words is "twenty-five million, two hundred fifty-seven thousand, four hundred ninety-five".