25672641 has 4 divisors (see below), whose sum is σ = 34230192. Its totient is φ = 17115092.

The previous prime is 25672613. The next prime is 25672649. The reversal of 25672641 is 14627652.

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 25672641 - 2⁵ = 25672609 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25672649) 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, 4278771 + ... + 4278776.

It is an arithmetic number, because the mean of its divisors is an integer number (8557548).

Almost surely, 2^25672641 is an apocalyptic number.

It is an amenable number.

25672641 is a deficient number, since it is larger than the sum of its proper divisors (8557551).

25672641 is an equidigital number, since it uses as much as digits as its factorization.

25672641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8557550.

The product of its digits is 20160, while the sum is 33.

The square root of 25672641 is about 5066.8176402945. The cubic root of 25672641 is about 295.0010188608.

The spelling of 25672641 in words is "twenty-five million, six hundred seventy-two thousand, six hundred forty-one".