25872143417 has 2 divisors, whose sum is σ = 25872143418. Its totient is φ = 25872143416.

The previous prime is 25872143387. The next prime is 25872143567. The reversal of 25872143417 is 71434127852.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15373272121 + 10498871296 = 123989^2 + 102464^2 .

It is a cyclic number.

It is not a de Polignac number, because 25872143417 - 2²² = 25867949113 is a prime.

It is not a weakly prime, because it can be changed into another prime (25872143917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12936071708 + 12936071709.

It is an arithmetic number, because the mean of its divisors is an integer number (12936071709).

Almost surely, 2^25872143417 is an apocalyptic number.

It is an amenable number.

25872143417 is a deficient number, since it is larger than the sum of its proper divisors (1).

25872143417 is an equidigital number, since it uses as much as digits as its factorization.

25872143417 is an evil number, because the sum of its binary digits is even.

The product of its digits is 376320, while the sum is 44.

The spelling of 25872143417 in words is "twenty-five billion, eight hundred seventy-two million, one hundred forty-three thousand, four hundred seventeen".