25994691 has 6 divisors (see below), whose sum is σ = 37547900. Its totient is φ = 17329788.

The previous prime is 25994681. The next prime is 25994693. The reversal of 25994691 is 19649952.

It is not a de Polignac number, because 25994691 - 2⁵ = 25994659 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25994693) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1444141 + ... + 1444158.

Almost surely, 2^25994691 is an apocalyptic number.

25994691 is a deficient number, since it is larger than the sum of its proper divisors (11553209).

25994691 is a wasteful number, since it uses less digits than its factorization.

25994691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2888305 (or 2888302 counting only the distinct ones).

The product of its digits is 174960, while the sum is 45.

The square root of 25994691 is about 5098.4988967342. The cubic root of 25994691 is about 296.2294415045.

The spelling of 25994691 in words is "twenty-five million, nine hundred ninety-four thousand, six hundred ninety-one".