400812425220 has 24 divisors (see below), whose sum is σ = 1122274790784. Its totient is φ = 106883313376.

The previous prime is 400812425203. The next prime is 400812425231. The reversal of 400812425220 is 22524218004.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3340103484 + ... + 3340103603.

It is an arithmetic number, because the mean of its divisors is an integer number (46761449616).

Almost surely, 2^400812425220 is an apocalyptic number.

It is an amenable number.

400812425220 is an abundant number, since it is smaller than the sum of its proper divisors (721462365564).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

400812425220 is a wasteful number, since it uses less digits than its factorization.

400812425220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6680207099 (or 6680207097 counting only the distinct ones).

The product of its (nonzero) digits is 10240, while the sum is 30.

The spelling of 400812425220 in words is "four hundred billion, eight hundred twelve million, four hundred twenty-five thousand, two hundred twenty".