25695261 has 6 divisors (see below), whose sum is σ = 37115390. Its totient is φ = 17130168.

The previous prime is 25695259. The next prime is 25695269. The reversal of 25695261 is 16259652.

It can be written as a sum of positive squares in only one way, i.e., 23707161 + 1988100 = 4869^2 + 1410^2 .

It is not a de Polignac number, because 25695261 - 2¹ = 25695259 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25695269) 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, 1427506 + ... + 1427523.

Almost surely, 2^25695261 is an apocalyptic number.

It is an amenable number.

25695261 is a deficient number, since it is larger than the sum of its proper divisors (11420129).

25695261 is a wasteful number, since it uses less digits than its factorization.

25695261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2855035 (or 2855032 counting only the distinct ones).

The product of its digits is 32400, while the sum is 36.

The square root of 25695261 is about 5069.0493191525. The cubic root of 25695261 is about 295.0876345980.

The spelling of 25695261 in words is "twenty-five million, six hundred ninety-five thousand, two hundred sixty-one".