25656353 has 4 divisors (see below), whose sum is σ = 25896240. Its totient is φ = 25416468.

The previous prime is 25656331. The next prime is 25656359. The reversal of 25656353 is 35365652.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 25656353 - 2²⁰ = 24607777 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (25656359) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 119783 + ... + 119996.

It is an arithmetic number, because the mean of its divisors is an integer number (6474060).

Almost surely, 2^25656353 is an apocalyptic number.

It is an amenable number.

25656353 is a deficient number, since it is larger than the sum of its proper divisors (239887).

25656353 is a wasteful number, since it uses less digits than its factorization.

25656353 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239886.

The product of its digits is 81000, while the sum is 35.

The square root of 25656353 is about 5065.2100647456. The cubic root of 25656353 is about 294.9386178905.

The spelling of 25656353 in words is "twenty-five million, six hundred fifty-six thousand, three hundred fifty-three".