25695321 has 4 divisors (see below), whose sum is σ = 34260432. Its totient is φ = 17130212.

The previous prime is 25695317. The next prime is 25695331. The reversal of 25695321 is 12359652.

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 25695321 - 2² = 25695317 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25695331) 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, 4282551 + ... + 4282556.

It is an arithmetic number, because the mean of its divisors is an integer number (8565108).

Almost surely, 2^25695321 is an apocalyptic number.

It is an amenable number.

25695321 is a deficient number, since it is larger than the sum of its proper divisors (8565111).

25695321 is an equidigital number, since it uses as much as digits as its factorization.

25695321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8565110.

The product of its digits is 16200, while the sum is 33.

The square root of 25695321 is about 5069.0552374185. The cubic root of 25695321 is about 295.0878642804.

The spelling of 25695321 in words is "twenty-five million, six hundred ninety-five thousand, three hundred twenty-one".