25235512573 has 2 divisors, whose sum is σ = 25235512574. Its totient is φ = 25235512572.

The previous prime is 25235512571. The next prime is 25235512607. The reversal of 25235512573 is 37521553252.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14893029369 + 10342483204 = 122037^2 + 101698^2 .

It is a cyclic number.

It is not a de Polignac number, because 25235512573 - 2¹ = 25235512571 is a prime.

Together with 25235512571, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25235512571) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12617756286 + 12617756287.

It is an arithmetic number, because the mean of its divisors is an integer number (12617756287).

Almost surely, 2^25235512573 is an apocalyptic number.

It is an amenable number.

25235512573 is a deficient number, since it is larger than the sum of its proper divisors (1).

25235512573 is an equidigital number, since it uses as much as digits as its factorization.

25235512573 is an evil number, because the sum of its binary digits is even.

The product of its digits is 315000, while the sum is 40.

The spelling of 25235512573 in words is "twenty-five billion, two hundred thirty-five million, five hundred twelve thousand, five hundred seventy-three".