25741056457 has 2 divisors, whose sum is σ = 25741056458. Its totient is φ = 25741056456.

The previous prime is 25741056443. The next prime is 25741056463. The reversal of 25741056457 is 75465014752.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21100177081 + 4640879376 = 145259^2 + 68124^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25741056457 is a prime.

It is a super-2 number, since 2×25741056457² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (25741056427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12870528228 + 12870528229.

It is an arithmetic number, because the mean of its divisors is an integer number (12870528229).

Almost surely, 2^25741056457 is an apocalyptic number.

It is an amenable number.

25741056457 is a deficient number, since it is larger than the sum of its proper divisors (1).

25741056457 is an equidigital number, since it uses as much as digits as its factorization.

25741056457 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1176000, while the sum is 46.

The spelling of 25741056457 in words is "twenty-five billion, seven hundred forty-one million, fifty-six thousand, four hundred fifty-seven".