25745249 has 2 divisors, whose sum is σ = 25745250. Its totient is φ = 25745248.

The previous prime is 25745207. The next prime is 25745267. The reversal of 25745249 is 94254752.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14137600 + 11607649 = 3760^2 + 3407^2 .

It is a cyclic number.

It is not a de Polignac number, because 25745249 - 2⁸ = 25744993 is a prime.

It is not a weakly prime, because it can be changed into another prime (25745549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12872624 + 12872625.

It is an arithmetic number, because the mean of its divisors is an integer number (12872625).

Almost surely, 2^25745249 is an apocalyptic number.

It is an amenable number.

25745249 is a deficient number, since it is larger than the sum of its proper divisors (1).

25745249 is an equidigital number, since it uses as much as digits as its factorization.

25745249 is an evil number, because the sum of its binary digits is even.

The product of its digits is 100800, while the sum is 38.

The square root of 25745249 is about 5073.9776310110. The cubic root of 25745249 is about 295.2788668190.

The spelling of 25745249 in words is "twenty-five million, seven hundred forty-five thousand, two hundred forty-nine".