25051263312065 has 4 divisors (see below), whose sum is σ = 30061515974484. Its totient is φ = 20041010649648.

The previous prime is 25051263312059. The next prime is 25051263312067. The reversal of 25051263312065 is 56021336215052.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 17753447418256 + 7297815893809 = 4213484^2 + 2701447^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25051263312065 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25051263312067) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2505126331202 + ... + 2505126331211.

It is an arithmetic number, because the mean of its divisors is an integer number (7515378993621).

Almost surely, 2^{25051263312065} is an apocalyptic number.

It is an amenable number.

25051263312065 is a deficient number, since it is larger than the sum of its proper divisors (5010252662419).

25051263312065 is an equidigital number, since it uses as much as digits as its factorization.

25051263312065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5010252662418.

The product of its (nonzero) digits is 324000, while the sum is 41.

The spelling of 25051263312065 in words is "twenty-five trillion, fifty-one billion, two hundred sixty-three million, three hundred twelve thousand, sixty-five".