25534865 has 16 divisors (see below), whose sum is σ = 31511808. Its totient is φ = 19854336.

The previous prime is 25534849. The next prime is 25534897. The reversal of 25534865 is 56843552.

It is a cyclic number.

It is not a de Polignac number, because 25534865 - 2⁴ = 25534849 is a prime.

It is a plaindrome in base 14.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45074 + ... + 45636.

It is an arithmetic number, because the mean of its divisors is an integer number (1969488).

Almost surely, 2^25534865 is an apocalyptic number.

It is an amenable number.

25534865 is a deficient number, since it is larger than the sum of its proper divisors (5976943).

25534865 is a wasteful number, since it uses less digits than its factorization.

25534865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 808.

The product of its digits is 144000, while the sum is 38.

The square root of 25534865 is about 5053.2034394036. The cubic root of 25534865 is about 294.4723498993.

The spelling of 25534865 in words is "twenty-five million, five hundred thirty-four thousand, eight hundred sixty-five".