25454865 has 16 divisors (see below), whose sum is σ = 43123968. Its totient is φ = 12777216.

The previous prime is 25454861. The next prime is 25454887. The reversal of 25454865 is 56845452.

It is not a de Polignac number, because 25454865 - 2² = 25454861 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (25454861) 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, 49657 + ... + 50166.

It is an arithmetic number, because the mean of its divisors is an integer number (2695248).

Almost surely, 2^25454865 is an apocalyptic number.

It is an amenable number.

25454865 is a deficient number, since it is larger than the sum of its proper divisors (17669103).

25454865 is a wasteful number, since it uses less digits than its factorization.

25454865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99848.

The product of its digits is 192000, while the sum is 39.

The square root of 25454865 is about 5045.2814589476. The cubic root of 25454865 is about 294.1645037073.

The spelling of 25454865 in words is "twenty-five million, four hundred fifty-four thousand, eight hundred sixty-five".