425518813 has 16 divisors (see below), whose sum is σ = 452761920. Its totient is φ = 398791296.

The previous prime is 425518811. The next prime is 425518817. The reversal of 425518813 is 318815524.

It is a cyclic number.

It is not a de Polignac number, because 425518813 - 2¹ = 425518811 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (425518811) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1226106 + ... + 1226452.

It is an arithmetic number, because the mean of its divisors is an integer number (28297620).

Almost surely, 2^425518813 is an apocalyptic number.

It is an amenable number.

425518813 is a deficient number, since it is larger than the sum of its proper divisors (27243107).

425518813 is a wasteful number, since it uses less digits than its factorization.

425518813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 876.

The product of its digits is 38400, while the sum is 37.

The square root of 425518813 is about 20628.1073538025. The cubic root of 425518813 is about 752.1531095035.

The spelling of 425518813 in words is "four hundred twenty-five million, five hundred eighteen thousand, eight hundred thirteen".