25201249 has 2 divisors, whose sum is σ = 25201250. Its totient is φ = 25201248.

The previous prime is 25201247. The next prime is 25201283. The reversal of 25201249 is 94210252.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17181025 + 8020224 = 4145^2 + 2832^2 .

It is a cyclic number.

It is not a de Polignac number, because 25201249 - 2¹ = 25201247 is a prime.

Together with 25201247, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (25201247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12600624 + 12600625.

It is an arithmetic number, because the mean of its divisors is an integer number (12600625).

Almost surely, 2^25201249 is an apocalyptic number.

It is an amenable number.

25201249 is a deficient number, since it is larger than the sum of its proper divisors (1).

25201249 is an equidigital number, since it uses as much as digits as its factorization.

25201249 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 25201249 is about 5020.0845610408. The cubic root of 25201249 is about 293.1842853613.

The spelling of 25201249 in words is "twenty-five million, two hundred one thousand, two hundred forty-nine".