25850749 has 2 divisors, whose sum is σ = 25850750. Its totient is φ = 25850748.

The previous prime is 25850743. The next prime is 25850771. The reversal of 25850749 is 94705852.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25826724 + 24025 = 5082^2 + 155^2 .

It is a cyclic number.

It is not a de Polignac number, because 25850749 - 2²³ = 17462141 is a prime.

It is a super-2 number, since 2×25850749² = 1336522447722002, which contains 22 as substring.

It is a Chen prime.

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

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25850743) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12925374 + 12925375.

It is an arithmetic number, because the mean of its divisors is an integer number (12925375).

Almost surely, 2^25850749 is an apocalyptic number.

It is an amenable number.

25850749 is a deficient number, since it is larger than the sum of its proper divisors (1).

25850749 is an equidigital number, since it uses as much as digits as its factorization.

25850749 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 100800, while the sum is 40.

The square root of 25850749 is about 5084.3631852967. The cubic root of 25850749 is about 295.6816526581.

The spelling of 25850749 in words is "twenty-five million, eight hundred fifty thousand, seven hundred forty-nine".