25279641 has 8 divisors (see below), whose sum is σ = 37451360. Its totient is φ = 16853076.

The previous prime is 25279627. The next prime is 25279643. The reversal of 25279641 is 14697252.

25279641 is a `hidden beast` number, since 2 + 5 + 2 + 7 + 9 + 641 = 666.

It is not a de Polignac number, because 25279641 - 2⁵ = 25279609 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25279596 and 25279605.

It is not an unprimeable number, because it can be changed into a prime (25279643) 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, 468115 + ... + 468168.

It is an arithmetic number, because the mean of its divisors is an integer number (4681420).

Almost surely, 2^25279641 is an apocalyptic number.

It is an amenable number.

25279641 is a deficient number, since it is larger than the sum of its proper divisors (12171719).

25279641 is an equidigital number, since it uses as much as digits as its factorization.

25279641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 936292 (or 936286 counting only the distinct ones).

The product of its digits is 30240, while the sum is 36.

The square root of 25279641 is about 5027.8863352307. The cubic root of 25279641 is about 293.4879675673.

Subtracting from 25279641 its sum of digits (36), we obtain a triangular number (25279605 = T₇₁₁₀).

The spelling of 25279641 in words is "twenty-five million, two hundred seventy-nine thousand, six hundred forty-one".