25566195 has 16 divisors (see below), whose sum is σ = 41518080. Its totient is φ = 13431264.

The previous prime is 25566187. The next prime is 25566199. The reversal of 25566195 is 59166552.

25566195 is nontrivially palindromic in base 13.

It is not a de Polignac number, because 25566195 - 2³ = 25566187 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25566199) 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, 11715 + ... + 13724.

It is an arithmetic number, because the mean of its divisors is an integer number (2594880).

Almost surely, 2^25566195 is an apocalyptic number.

25566195 is a deficient number, since it is larger than the sum of its proper divisors (15951885).

25566195 is a wasteful number, since it uses less digits than its factorization.

25566195 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25514.

The product of its digits is 81000, while the sum is 39.

The square root of 25566195 is about 5056.3025028176. The cubic root of 25566195 is about 294.5927349504.

The spelling of 25566195 in words is "twenty-five million, five hundred sixty-six thousand, one hundred ninety-five".