25125056017 has 2 divisors, whose sum is σ = 25125056018. Its totient is φ = 25125056016.

The previous prime is 25125055999. The next prime is 25125056023. The reversal of 25125056017 is 71065052152.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22612941376 + 2512114641 = 150376^2 + 50121^2 .

It is a cyclic number.

It is not a de Polignac number, because 25125056017 - 2⁷ = 25125055889 is a prime.

It is not a weakly prime, because it can be changed into another prime (25125056057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12562528008 + 12562528009.

It is an arithmetic number, because the mean of its divisors is an integer number (12562528009).

Almost surely, 2^25125056017 is an apocalyptic number.

It is an amenable number.

25125056017 is a deficient number, since it is larger than the sum of its proper divisors (1).

25125056017 is an equidigital number, since it uses as much as digits as its factorization.

25125056017 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21000, while the sum is 34.

The spelling of 25125056017 in words is "twenty-five billion, one hundred twenty-five million, fifty-six thousand, seventeen".