25476000643 has 2 divisors, whose sum is σ = 25476000644. Its totient is φ = 25476000642.

The previous prime is 25476000611. The next prime is 25476000653. The reversal of 25476000643 is 34600067452.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25476000643 - 2⁵ = 25476000611 is a prime.

It is not a weakly prime, because it can be changed into another prime (25476000653) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12738000321 + 12738000322.

It is an arithmetic number, because the mean of its divisors is an integer number (12738000322).

Almost surely, 2^25476000643 is an apocalyptic number.

25476000643 is a deficient number, since it is larger than the sum of its proper divisors (1).

25476000643 is an equidigital number, since it uses as much as digits as its factorization.

25476000643 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 120960, while the sum is 37.

The spelling of 25476000643 in words is "twenty-five billion, four hundred seventy-six million, six hundred forty-three", and thus it is an aban number.