25700546761 has 2 divisors, whose sum is σ = 25700546762. Its totient is φ = 25700546760.

The previous prime is 25700546747. The next prime is 25700546777. The reversal of 25700546761 is 16764500752.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21096110025 + 4604436736 = 145245^2 + 67856^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25700546761 is a prime.

It is a super-2 number, since 2×25700546761² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (25700546731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12850273380 + 12850273381.

It is an arithmetic number, because the mean of its divisors is an integer number (12850273381).

Almost surely, 2^25700546761 is an apocalyptic number.

It is an amenable number.

25700546761 is a deficient number, since it is larger than the sum of its proper divisors (1).

25700546761 is an equidigital number, since it uses as much as digits as its factorization.

25700546761 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 352800, while the sum is 43.

The spelling of 25700546761 in words is "twenty-five billion, seven hundred million, five hundred forty-six thousand, seven hundred sixty-one".