425920918 has 4 divisors (see below), whose sum is σ = 638881380. Its totient is φ = 212960458.

The previous prime is 425920897. The next prime is 425920919. The reversal of 425920918 is 819029524.

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

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (425920919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106480228 + ... + 106480231.

It is an arithmetic number, because the mean of its divisors is an integer number (159720345).

Almost surely, 2^425920918 is an apocalyptic number.

425920918 is a deficient number, since it is larger than the sum of its proper divisors (212960462).

425920918 is a wasteful number, since it uses less digits than its factorization.

425920918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 212960461.

The product of its (nonzero) digits is 51840, while the sum is 40.

The square root of 425920918 is about 20637.8515839222. The cubic root of 425920918 is about 752.3899570876.

The spelling of 425920918 in words is "four hundred twenty-five million, nine hundred twenty thousand, nine hundred eighteen".