25196865 has 16 divisors (see below), whose sum is σ = 40392000. Its totient is φ = 13412672.

The previous prime is 25196863. The next prime is 25196881. The reversal of 25196865 is 56869152.

It is a cyclic number.

It is not a de Polignac number, because 25196865 - 2¹ = 25196863 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25196861) 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, 8611 + ... + 11159.

It is an arithmetic number, because the mean of its divisors is an integer number (2524500).

Almost surely, 2^25196865 is an apocalyptic number.

It is an amenable number.

25196865 is a deficient number, since it is larger than the sum of its proper divisors (15195135).

25196865 is a wasteful number, since it uses less digits than its factorization.

25196865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3216.

The product of its digits is 129600, while the sum is 42.

The square root of 25196865 is about 5019.6478960182. The cubic root of 25196865 is about 293.1672836319.

The spelling of 25196865 in words is "twenty-five million, one hundred ninety-six thousand, eight hundred sixty-five".