25262750291381 has 2 divisors, whose sum is σ = 25262750291382. Its totient is φ = 25262750291380.

The previous prime is 25262750291333. The next prime is 25262750291399. The reversal of 25262750291381 is 18319205726252.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17008242051025 + 8254508240356 = 4124105^2 + 2873066^2 .

It is a cyclic number.

It is not a de Polignac number, because 25262750291381 - 2³⁸ = 24987872384437 is a prime.

It is a super-2 number, since 2×25262750291381² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25262750291881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12631375145690 + 12631375145691.

It is an arithmetic number, because the mean of its divisors is an integer number (12631375145691).

Almost surely, 2^{25262750291381} is an apocalyptic number.

It is an amenable number.

25262750291381 is a deficient number, since it is larger than the sum of its proper divisors (1).

25262750291381 is an equidigital number, since it uses as much as digits as its factorization.

25262750291381 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3628800, while the sum is 53.

The spelling of 25262750291381 in words is "twenty-five trillion, two hundred sixty-two billion, seven hundred fifty million, two hundred ninety-one thousand, three hundred eighty-one".