25295661 has 12 divisors (see below), whose sum is σ = 36979488. Its totient is φ = 16660104.

The previous prime is 25295639. The next prime is 25295687. The reversal of 25295661 is 16659252.

It is not a de Polignac number, because 25295661 - 2⁵ = 25295629 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25295761) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16185 + ... + 17678.

It is an arithmetic number, because the mean of its divisors is an integer number (3081624).

Almost surely, 2^25295661 is an apocalyptic number.

It is an amenable number.

25295661 is a deficient number, since it is larger than the sum of its proper divisors (11683827).

25295661 is a wasteful number, since it uses less digits than its factorization.

25295661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33952 (or 33949 counting only the distinct ones).

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

The square root of 25295661 is about 5029.4791976904. The cubic root of 25295661 is about 293.5499500459.

The spelling of 25295661 in words is "twenty-five million, two hundred ninety-five thousand, six hundred sixty-one".