25952940173 has 2 divisors, whose sum is σ = 25952940174. Its totient is φ = 25952940172.

The previous prime is 25952940133. The next prime is 25952940227. The reversal of 25952940173 is 37104925952.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14357311684 + 11595628489 = 119822^2 + 107683^2 .

It is a cyclic number.

It is not a de Polignac number, because 25952940173 - 2¹² = 25952936077 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25952940113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12976470086 + 12976470087.

It is an arithmetic number, because the mean of its divisors is an integer number (12976470087).

Almost surely, 2^25952940173 is an apocalyptic number.

It is an amenable number.

25952940173 is a deficient number, since it is larger than the sum of its proper divisors (1).

25952940173 is an equidigital number, since it uses as much as digits as its factorization.

25952940173 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 680400, while the sum is 47.

The spelling of 25952940173 in words is "twenty-five billion, nine hundred fifty-two million, nine hundred forty thousand, one hundred seventy-three".