25430134577 has 2 divisors, whose sum is σ = 25430134578. Its totient is φ = 25430134576.

The previous prime is 25430134567. The next prime is 25430134627. The reversal of 25430134577 is 77543103452.

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., 22888361521 + 2541773056 = 151289^2 + 50416^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25430134577 is a prime.

It is not a weakly prime, because it can be changed into another prime (25430134517) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12715067288 + 12715067289.

It is an arithmetic number, because the mean of its divisors is an integer number (12715067289).

Almost surely, 2^25430134577 is an apocalyptic number.

It is an amenable number.

25430134577 is a deficient number, since it is larger than the sum of its proper divisors (1).

25430134577 is an equidigital number, since it uses as much as digits as its factorization.

25430134577 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 352800, while the sum is 41.

The spelling of 25430134577 in words is "twenty-five billion, four hundred thirty million, one hundred thirty-four thousand, five hundred seventy-seven".