25845749 has 4 divisors (see below), whose sum is σ = 25898880. Its totient is φ = 25792620.

The previous prime is 25845737. The next prime is 25845751. The reversal of 25845749 is 94754852.

It is a happy number.

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 25845749 - 2²⁴ = 9068533 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25845779) 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, 25829 + ... + 26810.

It is an arithmetic number, because the mean of its divisors is an integer number (6474720).

Almost surely, 2^25845749 is an apocalyptic number.

It is an amenable number.

25845749 is a deficient number, since it is larger than the sum of its proper divisors (53131).

25845749 is an equidigital number, since it uses as much as digits as its factorization.

25845749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53130.

The product of its digits is 403200, while the sum is 44.

The square root of 25845749 is about 5083.8714578557. The cubic root of 25845749 is about 295.6625880449.

The spelling of 25845749 in words is "twenty-five million, eight hundred forty-five thousand, seven hundred forty-nine".