400225718 has 4 divisors (see below), whose sum is σ = 600338580. Its totient is φ = 200112858.

The previous prime is 400225703. The next prime is 400225729. The reversal of 400225718 is 817522004.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100056428 + ... + 100056431.

It is an arithmetic number, because the mean of its divisors is an integer number (150084645).

Almost surely, 2^400225718 is an apocalyptic number.

400225718 is a deficient number, since it is larger than the sum of its proper divisors (200112862).

400225718 is a wasteful number, since it uses less digits than its factorization.

400225718 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200112861.

The product of its (nonzero) digits is 4480, while the sum is 29.

The square root of 400225718 is about 20005.6421541524. The cubic root of 400225718 is about 736.9448657043.

The spelling of 400225718 in words is "four hundred million, two hundred twenty-five thousand, seven hundred eighteen".