25004303257 has 2 divisors, whose sum is σ = 25004303258. Its totient is φ = 25004303256.

The previous prime is 25004303231. The next prime is 25004303263. The reversal of 25004303257 is 75230340052.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16652353936 + 8351949321 = 129044^2 + 91389^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25004303257 is a prime.

It is not a weakly prime, because it can be changed into another prime (25004303227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12502151628 + 12502151629.

It is an arithmetic number, because the mean of its divisors is an integer number (12502151629).

Almost surely, 2^25004303257 is an apocalyptic number.

It is an amenable number.

25004303257 is a deficient number, since it is larger than the sum of its proper divisors (1).

25004303257 is an equidigital number, since it uses as much as digits as its factorization.

25004303257 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25200, while the sum is 31.

The spelling of 25004303257 in words is "twenty-five billion, four million, three hundred three thousand, two hundred fifty-seven".