25860749 has 2 divisors, whose sum is σ = 25860750. Its totient is φ = 25860748.

The previous prime is 25860719. The next prime is 25860773. The reversal of 25860749 is 94706852.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16362025 + 9498724 = 4045^2 + 3082^2 .

It is a cyclic number.

It is not a de Polignac number, because 25860749 - 2⁸ = 25860493 is a prime.

It is a super-3 number, since 3×25860749³ (a number of 23 digits) contains 333 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25860719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12930374 + 12930375.

It is an arithmetic number, because the mean of its divisors is an integer number (12930375).

Almost surely, 2^25860749 is an apocalyptic number.

It is an amenable number.

25860749 is a deficient number, since it is larger than the sum of its proper divisors (1).

25860749 is an equidigital number, since it uses as much as digits as its factorization.

25860749 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 120960, while the sum is 41.

The square root of 25860749 is about 5085.3464975358. The cubic root of 25860749 is about 295.7197745109.

The spelling of 25860749 in words is "twenty-five million, eight hundred sixty thousand, seven hundred forty-nine".