25183397947 has 2 divisors, whose sum is σ = 25183397948. Its totient is φ = 25183397946.

The previous prime is 25183397881. The next prime is 25183397969. The reversal of 25183397947 is 74979338152.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25183397947 - 2¹¹ = 25183395899 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 25183397891 and 25183397900.

It is not a weakly prime, because it can be changed into another prime (25183397747) 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, 12591698973 + 12591698974.

It is an arithmetic number, because the mean of its divisors is an integer number (12591698974).

Almost surely, 2^25183397947 is an apocalyptic number.

25183397947 is a deficient number, since it is larger than the sum of its proper divisors (1).

25183397947 is an equidigital number, since it uses as much as digits as its factorization.

25183397947 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11430720, while the sum is 58.

The spelling of 25183397947 in words is "twenty-five billion, one hundred eighty-three million, three hundred ninety-seven thousand, nine hundred forty-seven".