425849726578 has 8 divisors (see below), whose sum is σ = 638779425372. Its totient is φ = 212923251456.

The previous prime is 425849726573. The next prime is 425849726663. The reversal of 425849726578 is 875627948524.

It can be written as a sum of positive squares in 2 ways, for example, as 337743458649 + 88106267929 = 581157^2 + 296827^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (425849726573) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 442975 + ... + 1023682.

Almost surely, 2^425849726578 is an apocalyptic number.

425849726578 is a deficient number, since it is larger than the sum of its proper divisors (212929698794).

425849726578 is a wasteful number, since it uses less digits than its factorization.

425849726578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1611836.

The product of its digits is 270950400, while the sum is 67.

The spelling of 425849726578 in words is "four hundred twenty-five billion, eight hundred forty-nine million, seven hundred twenty-six thousand, five hundred seventy-eight".