25964109 has 6 divisors (see below), whose sum is σ = 37503726. Its totient is φ = 17309400.

The previous prime is 25964093. The next prime is 25964161. The reversal of 25964109 is 90146952.

25964109 is a `hidden beast` number, since 2 + 5 + 9 + 641 + 0 + 9 = 666.

It can be written as a sum of positive squares in only one way, i.e., 23474025 + 2490084 = 4845^2 + 1578^2 .

It is not a de Polignac number, because 25964109 - 2⁴ = 25964093 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25964509) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1442442 + ... + 1442459.

It is an arithmetic number, because the mean of its divisors is an integer number (6250621).

Almost surely, 2^25964109 is an apocalyptic number.

It is an amenable number.

25964109 is a deficient number, since it is larger than the sum of its proper divisors (11539617).

25964109 is a wasteful number, since it uses less digits than its factorization.

25964109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2884907 (or 2884904 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 36.

The square root of 25964109 is about 5095.4988960847. The cubic root of 25964109 is about 296.1132274698.

The spelling of 25964109 in words is "twenty-five million, nine hundred sixty-four thousand, one hundred nine".