25969641 has 4 divisors (see below), whose sum is σ = 34626192. Its totient is φ = 17313092.

The previous prime is 25969631. The next prime is 25969663. The reversal of 25969641 is 14696952.

It is a happy number.

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 25969641 - 2⁵ = 25969609 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 25969593 and 25969602.

It is not an unprimeable number, because it can be changed into a prime (25969631) 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, 4328271 + ... + 4328276.

It is an arithmetic number, because the mean of its divisors is an integer number (8656548).

Almost surely, 2^25969641 is an apocalyptic number.

It is an amenable number.

25969641 is a deficient number, since it is larger than the sum of its proper divisors (8656551).

25969641 is an equidigital number, since it uses as much as digits as its factorization.

25969641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8656550.

The product of its digits is 116640, while the sum is 42.

The square root of 25969641 is about 5096.0416992014. The cubic root of 25969641 is about 296.1342562683.

The spelling of 25969641 in words is "twenty-five million, nine hundred sixty-nine thousand, six hundred forty-one".