25743240577 has 2 divisors, whose sum is σ = 25743240578. Its totient is φ = 25743240576.

The previous prime is 25743240529. The next prime is 25743240629. The reversal of 25743240577 is 77504234752.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19292098816 + 6451141761 = 138896^2 + 80319^2 .

It is a cyclic number.

It is not a de Polignac number, because 25743240577 - 2²⁷ = 25609022849 is a prime.

It is not a weakly prime, because it can be changed into another prime (25743240517) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12871620288 + 12871620289.

It is an arithmetic number, because the mean of its divisors is an integer number (12871620289).

Almost surely, 2^25743240577 is an apocalyptic number.

It is an amenable number.

25743240577 is a deficient number, since it is larger than the sum of its proper divisors (1).

25743240577 is an equidigital number, since it uses as much as digits as its factorization.

25743240577 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1646400, while the sum is 46.

The spelling of 25743240577 in words is "twenty-five billion, seven hundred forty-three million, two hundred forty thousand, five hundred seventy-seven".