25270994317 has 2 divisors, whose sum is σ = 25270994318. Its totient is φ = 25270994316.

The previous prime is 25270994297. The next prime is 25270994351. The reversal of 25270994317 is 71349907252.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25158400996 + 112593321 = 158614^2 + 10611^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25270994317 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25270995317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12635497158 + 12635497159.

It is an arithmetic number, because the mean of its divisors is an integer number (12635497159).

Almost surely, 2^25270994317 is an apocalyptic number.

It is an amenable number.

25270994317 is a deficient number, since it is larger than the sum of its proper divisors (1).

25270994317 is an equidigital number, since it uses as much as digits as its factorization.

25270994317 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 952560, while the sum is 49.

The spelling of 25270994317 in words is "twenty-five billion, two hundred seventy million, nine hundred ninety-four thousand, three hundred seventeen".