425679813 has 32 divisors (see below), whose sum is σ = 719107200. Its totient is φ = 246544128.

The previous prime is 425679803. The next prime is 425679823. The reversal of 425679813 is 318976524.

425679813 is a `hidden beast` number, since 4 + 2 + 567 + 9 + 81 + 3 = 666.

It is an interprime number because it is at equal distance from previous prime (425679803) and next prime (425679823).

It is not a de Polignac number, because 425679813 - 2¹⁷ = 425548741 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (425679803) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 29703 + ... + 41636.

It is an arithmetic number, because the mean of its divisors is an integer number (22472100).

Almost surely, 2^425679813 is an apocalyptic number.

It is an amenable number.

425679813 is a deficient number, since it is larger than the sum of its proper divisors (293427387).

425679813 is a wasteful number, since it uses less digits than its factorization.

425679813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71378 (or 71372 counting only the distinct ones).

The product of its digits is 362880, while the sum is 45.

The square root of 425679813 is about 20632.0094271014. The cubic root of 425679813 is about 752.2479595058.

The spelling of 425679813 in words is "four hundred twenty-five million, six hundred seventy-nine thousand, eight hundred thirteen".