25461812867 has 2 divisors, whose sum is σ = 25461812868. Its totient is φ = 25461812866.

The previous prime is 25461812851. The next prime is 25461812941. The reversal of 25461812867 is 76821816452.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25461812867 - 2⁴ = 25461812851 is a prime.

It is not a weakly prime, because it can be changed into another prime (25461812837) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12730906433 + 12730906434.

It is an arithmetic number, because the mean of its divisors is an integer number (12730906434).

Almost surely, 2^25461812867 is an apocalyptic number.

25461812867 is a deficient number, since it is larger than the sum of its proper divisors (1).

25461812867 is an equidigital number, since it uses as much as digits as its factorization.

25461812867 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1290240, while the sum is 50.

The spelling of 25461812867 in words is "twenty-five billion, four hundred sixty-one million, eight hundred twelve thousand, eight hundred sixty-seven".