25257825 has 30 divisors (see below), whose sum is σ = 46789974. Its totient is φ = 13469760.

The previous prime is 25257823. The next prime is 25257851. The reversal of 25257825 is 52875252.

It can be written as a sum of positive squares in 3 ways, for example, as 3017169 + 22240656 = 1737^2 + 4716^2 .

It is not a de Polignac number, because 25257825 - 2¹ = 25257823 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 25257825.

It is not an unprimeable number, because it can be changed into a prime (25257823) 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 29 ways as a sum of consecutive naturals, for example, 4212 + ... + 8261.

Almost surely, 2^25257825 is an apocalyptic number.

25257825 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25257825 is a deficient number, since it is larger than the sum of its proper divisors (21532149).

25257825 is a wasteful number, since it uses less digits than its factorization.

25257825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12495 (or 12481 counting only the distinct ones).

The product of its digits is 56000, while the sum is 36.

The square root of 25257825 is about 5025.7163668476. The cubic root of 25257825 is about 293.4035178421.

The spelling of 25257825 in words is "twenty-five million, two hundred fifty-seven thousand, eight hundred twenty-five".