25638741 has 8 divisors (see below), whose sum is σ = 37983360. Its totient is φ = 17092476.

The previous prime is 25638713. The next prime is 25638751. The reversal of 25638741 is 14783652.

It is not a de Polignac number, because 25638741 - 2⁵ = 25638709 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a junction number, because it is equal to n+sod(n) for n = 25638696 and 25638705.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25638751) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 474765 + ... + 474818.

It is an arithmetic number, because the mean of its divisors is an integer number (4747920).

Almost surely, 2^25638741 is an apocalyptic number.

It is an amenable number.

25638741 is a deficient number, since it is larger than the sum of its proper divisors (12344619).

25638741 is an equidigital number, since it uses as much as digits as its factorization.

25638741 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 949592 (or 949586 counting only the distinct ones).

The product of its digits is 40320, while the sum is 36.

The square root of 25638741 is about 5063.4712401672. The cubic root of 25638741 is about 294.8711148178.

The spelling of 25638741 in words is "twenty-five million, six hundred thirty-eight thousand, seven hundred forty-one".