25201746643 has 2 divisors, whose sum is σ = 25201746644. Its totient is φ = 25201746642.

The previous prime is 25201746617. The next prime is 25201746649. The reversal of 25201746643 is 34664710252.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25201746643 - 2³³ = 16611812051 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 25201746596 and 25201746605.

It is not a weakly prime, because it can be changed into another prime (25201746649) 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, 12600873321 + 12600873322.

It is an arithmetic number, because the mean of its divisors is an integer number (12600873322).

Almost surely, 2^25201746643 is an apocalyptic number.

25201746643 is a deficient number, since it is larger than the sum of its proper divisors (1).

25201746643 is an equidigital number, since it uses as much as digits as its factorization.

25201746643 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 241920, while the sum is 40.

The spelling of 25201746643 in words is "twenty-five billion, two hundred one million, seven hundred forty-six thousand, six hundred forty-three".