25816772327 has 2 divisors, whose sum is σ = 25816772328. Its totient is φ = 25816772326.

The previous prime is 25816772309. The next prime is 25816772357. The reversal of 25816772327 is 72327761852.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25816772327 - 2¹² = 25816768231 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25816772357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12908386163 + 12908386164.

It is an arithmetic number, because the mean of its divisors is an integer number (12908386164).

Almost surely, 2^25816772327 is an apocalyptic number.

25816772327 is a deficient number, since it is larger than the sum of its proper divisors (1).

25816772327 is an equidigital number, since it uses as much as digits as its factorization.

25816772327 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1975680, while the sum is 50.

The spelling of 25816772327 in words is "twenty-five billion, eight hundred sixteen million, seven hundred seventy-two thousand, three hundred twenty-seven".