25394257 has 8 divisors (see below), whose sum is σ = 29067200. Its totient is φ = 21732624.

The previous prime is 25394233. The next prime is 25394267. The reversal of 25394257 is 75249352.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 25394257 - 2¹⁵ = 25361489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25394267) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2719 + ... + 7627.

It is an arithmetic number, because the mean of its divisors is an integer number (3633400).

Almost surely, 2^25394257 is an apocalyptic number.

It is an amenable number.

25394257 is a deficient number, since it is larger than the sum of its proper divisors (3672943).

25394257 is an equidigital number, since it uses as much as digits as its factorization.

25394257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5655.

The product of its digits is 75600, while the sum is 37.

The square root of 25394257 is about 5039.2714751242. The cubic root of 25394257 is about 293.9308497340.

It can be divided in two parts, 25394 and 257, that added together give a triangular number (25651 = T₂₂₆).

The spelling of 25394257 in words is "twenty-five million, three hundred ninety-four thousand, two hundred fifty-seven".