425626779 has 4 divisors (see below), whose sum is σ = 567502376. Its totient is φ = 283751184.

The previous prime is 425626763. The next prime is 425626793. The reversal of 425626779 is 977626524.

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

It is not a de Polignac number, because 425626779 - 2⁴ = 425626763 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (425626759) 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, 70937794 + ... + 70937799.

It is an arithmetic number, because the mean of its divisors is an integer number (141875594).

Almost surely, 2^425626779 is an apocalyptic number.

425626779 is a deficient number, since it is larger than the sum of its proper divisors (141875597).

425626779 is a wasteful number, since it uses less digits than its factorization.

425626779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141875596.

The product of its digits is 1270080, while the sum is 48.

The square root of 425626779 is about 20630.7241511295. The cubic root of 425626779 is about 752.2167182034.

The spelling of 425626779 in words is "four hundred twenty-five million, six hundred twenty-six thousand, seven hundred seventy-nine".