25945212503251 has 2 divisors, whose sum is σ = 25945212503252. Its totient is φ = 25945212503250.

The previous prime is 25945212503183. The next prime is 25945212503261. The reversal of 25945212503251 is 15230521254952.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25945212503251 is a prime.

It is not a weakly prime, because it can be changed into another prime (25945212503261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12972606251625 + 12972606251626.

It is an arithmetic number, because the mean of its divisors is an integer number (12972606251626).

Almost surely, 2^{25945212503251} is an apocalyptic number.

25945212503251 is a deficient number, since it is larger than the sum of its proper divisors (1).

25945212503251 is an equidigital number, since it uses as much as digits as its factorization.

25945212503251 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1080000, while the sum is 46.

The spelling of 25945212503251 in words is "twenty-five trillion, nine hundred forty-five billion, two hundred twelve million, five hundred three thousand, two hundred fifty-one".