25196257 has 2 divisors, whose sum is σ = 25196258. Its totient is φ = 25196256.

The previous prime is 25196231. The next prime is 25196279. The reversal of 25196257 is 75269152.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 24049216 + 1147041 = 4904^2 + 1071^2 .

It is a cyclic number.

It is not a de Polignac number, because 25196257 - 2²³ = 16807649 is a prime.

It is not a weakly prime, because it can be changed into another prime (25196207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12598128 + 12598129.

It is an arithmetic number, because the mean of its divisors is an integer number (12598129).

Almost surely, 2^25196257 is an apocalyptic number.

It is an amenable number.

25196257 is a deficient number, since it is larger than the sum of its proper divisors (1).

25196257 is an equidigital number, since it uses as much as digits as its factorization.

25196257 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 37800, while the sum is 37.

The square root of 25196257 is about 5019.5873336361. The cubic root of 25196257 is about 293.1649255721.

The spelling of 25196257 in words is "twenty-five million, one hundred ninety-six thousand, two hundred fifty-seven".