25710560157497 has 2 divisors, whose sum is σ = 25710560157498. Its totient is φ = 25710560157496.

The previous prime is 25710560157479. The next prime is 25710560157553. The reversal of 25710560157497 is 79475106501752.

Together with previous prime (25710560157479) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13834948055296 + 11875612102201 = 3719536^2 + 3446101^2 .

It is a cyclic number.

It is not a de Polignac number, because 25710560157497 - 2²⁶ = 25710493048633 is a prime.

It is a super-2 number, since 2×25710560157497² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (25710560159497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12855280078748 + 12855280078749.

It is an arithmetic number, because the mean of its divisors is an integer number (12855280078749).

Almost surely, 2^{25710560157497} is an apocalyptic number.

It is an amenable number.

25710560157497 is a deficient number, since it is larger than the sum of its proper divisors (1).

25710560157497 is an equidigital number, since it uses as much as digits as its factorization.

25710560157497 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18522000, while the sum is 59.

The spelling of 25710560157497 in words is "twenty-five trillion, seven hundred ten billion, five hundred sixty million, one hundred fifty-seven thousand, four hundred ninety-seven".