25726057066 has 4 divisors (see below), whose sum is σ = 38589085602. Its totient is φ = 12863028532.

The previous prime is 25726057009. The next prime is 25726057081. The reversal of 25726057066 is 66075062752.

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

It can be written as a sum of positive squares in only one way, i.e., 14108450841 + 11617606225 = 118779^2 + 107785^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6431514265 + ... + 6431514268.

Almost surely, 2^25726057066 is an apocalyptic number.

25726057066 is a deficient number, since it is larger than the sum of its proper divisors (12863028536).

25726057066 is a wasteful number, since it uses less digits than its factorization.

25726057066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12863028535.

The product of its (nonzero) digits is 1058400, while the sum is 46.

The spelling of 25726057066 in words is "twenty-five billion, seven hundred twenty-six million, fifty-seven thousand, sixty-six".