25897393 has 4 divisors (see below), whose sum is σ = 26148928. Its totient is φ = 25645860.

The previous prime is 25897387. The next prime is 25897397. The reversal of 25897393 is 39379852.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 25897393 - 2⁹ = 25896881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25897397) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 125613 + ... + 125818.

It is an arithmetic number, because the mean of its divisors is an integer number (6537232).

Almost surely, 2^25897393 is an apocalyptic number.

It is an amenable number.

25897393 is a deficient number, since it is larger than the sum of its proper divisors (251535).

25897393 is a wasteful number, since it uses less digits than its factorization.

25897393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251534.

The product of its digits is 408240, while the sum is 46.

The square root of 25897393 is about 5088.9481231390. The cubic root of 25897393 is about 295.8593843003.

The spelling of 25897393 in words is "twenty-five million, eight hundred ninety-seven thousand, three hundred ninety-three".