25746641 has 4 divisors (see below), whose sum is σ = 25811892. Its totient is φ = 25681392.

The previous prime is 25746631. The next prime is 25746667. The reversal of 25746641 is 14664752.

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

It can be written as a sum of positive squares in 2 ways, for example, as 18671041 + 7075600 = 4321^2 + 2660^2 .

It is a cyclic number.

It is not a de Polignac number, because 25746641 - 2¹⁸ = 25484497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25746631) 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, 32030 + ... + 32823.

It is an arithmetic number, because the mean of its divisors is an integer number (6452973).

Almost surely, 2^25746641 is an apocalyptic number.

It is an amenable number.

25746641 is a deficient number, since it is larger than the sum of its proper divisors (65251).

25746641 is an equidigital number, since it uses as much as digits as its factorization.

25746641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65250.

The product of its digits is 40320, while the sum is 35.

The square root of 25746641 is about 5074.1147996473. The cubic root of 25746641 is about 295.2841884582.

The spelling of 25746641 in words is "twenty-five million, seven hundred forty-six thousand, six hundred forty-one".