425888779 has 4 divisors (see below), whose sum is σ = 426905640. Its totient is φ = 424871920.

The previous prime is 425888773. The next prime is 425888831. The reversal of 425888779 is 977888524.

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 425888779 - 2⁷ = 425888651 is a prime.

It is a super-2 number, since 2×425888779² = 362762504156221682, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (425888773) 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, 507802 + ... + 508639.

It is an arithmetic number, because the mean of its divisors is an integer number (106726410).

Almost surely, 2^425888779 is an apocalyptic number.

425888779 is a deficient number, since it is larger than the sum of its proper divisors (1016861).

425888779 is a wasteful number, since it uses less digits than its factorization.

425888779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1016860.

The product of its digits is 9031680, while the sum is 58.

The square root of 425888779 is about 20637.0729271377. The cubic root of 425888779 is about 752.3710320806.

The spelling of 425888779 in words is "four hundred twenty-five million, eight hundred eighty-eight thousand, seven hundred seventy-nine".