25242449 has 2 divisors, whose sum is σ = 25242450. Its totient is φ = 25242448.

The previous prime is 25242443. The next prime is 25242479. The reversal of 25242449 is 94424252.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23961025 + 1281424 = 4895^2 + 1132^2 .

It is a cyclic number.

It is not a de Polignac number, because 25242449 - 2⁸ = 25242193 is a prime.

It is not a weakly prime, because it can be changed into another prime (25242443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12621224 + 12621225.

It is an arithmetic number, because the mean of its divisors is an integer number (12621225).

Almost surely, 2^25242449 is an apocalyptic number.

It is an amenable number.

25242449 is a deficient number, since it is larger than the sum of its proper divisors (1).

25242449 is an equidigital number, since it uses as much as digits as its factorization.

25242449 is an evil number, because the sum of its binary digits is even.

The product of its digits is 23040, while the sum is 32.

The square root of 25242449 is about 5024.1864017968. The cubic root of 25242449 is about 293.3439681349.

The spelling of 25242449 in words is "twenty-five million, two hundred forty-two thousand, four hundred forty-nine".