25300764991 has 2 divisors, whose sum is σ = 25300764992. Its totient is φ = 25300764990.

The previous prime is 25300764953. The next prime is 25300765031. The reversal of 25300764991 is 19946700352.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25300764991 - 2²³ = 25292376383 is a prime.

It is a super-2 number, since 2×25300764991² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25300764941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12650382495 + 12650382496.

It is an arithmetic number, because the mean of its divisors is an integer number (12650382496).

Almost surely, 2^25300764991 is an apocalyptic number.

25300764991 is a deficient number, since it is larger than the sum of its proper divisors (1).

25300764991 is an equidigital number, since it uses as much as digits as its factorization.

25300764991 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 408240, while the sum is 46.

The spelling of 25300764991 in words is "twenty-five billion, three hundred million, seven hundred sixty-four thousand, nine hundred ninety-one".