25946891 has 4 divisors (see below), whose sum is σ = 26579784. Its totient is φ = 25314000.

The previous prime is 25946887. The next prime is 25946897. The reversal of 25946891 is 19864952.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 25946891 - 2² = 25946887 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25946897) 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, 316385 + ... + 316466.

It is an arithmetic number, because the mean of its divisors is an integer number (6644946).

Almost surely, 2^25946891 is an apocalyptic number.

25946891 is a deficient number, since it is larger than the sum of its proper divisors (632893).

25946891 is an equidigital number, since it uses as much as digits as its factorization.

25946891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 632892.

The product of its digits is 155520, while the sum is 44.

The square root of 25946891 is about 5093.8090855469. The cubic root of 25946891 is about 296.0477575426.

The spelling of 25946891 in words is "twenty-five million, nine hundred forty-six thousand, eight hundred ninety-one".