25746464771 has 4 divisors (see below), whose sum is σ = 25780297944. Its totient is φ = 25712631600.

The previous prime is 25746464713. The next prime is 25746464789. The reversal of 25746464771 is 17746464752.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 25746464771 - 2²² = 25742270467 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25746464701) 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 in 3 ways as a sum of consecutive naturals, for example, 16915445 + ... + 16916966.

It is an arithmetic number, because the mean of its divisors is an integer number (6445074486).

Almost surely, 2^25746464771 is an apocalyptic number.

25746464771 is a deficient number, since it is larger than the sum of its proper divisors (33833173).

25746464771 is an equidigital number, since it uses as much as digits as its factorization.

25746464771 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33833172.

The product of its digits is 7902720, while the sum is 53.

The spelling of 25746464771 in words is "twenty-five billion, seven hundred forty-six million, four hundred sixty-four thousand, seven hundred seventy-one".