401731225072 has 40 divisors (see below), whose sum is σ = 820506392960. Its totient is φ = 190018249920.

The previous prime is 401731225057. The next prime is 401731225073. The reversal of 401731225072 is 270522137104.

It is a super-2 number, since 2×401731225072² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401731225073) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 746148 + ... + 1166275.

It is an arithmetic number, because the mean of its divisors is an integer number (20512659824).

Almost surely, 2^401731225072 is an apocalyptic number.

It is an amenable number.

401731225072 is an abundant number, since it is smaller than the sum of its proper divisors (418775167888).

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

401731225072 is a wasteful number, since it uses less digits than its factorization.

401731225072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1913141 (or 1913135 counting only the distinct ones).

The product of its (nonzero) digits is 23520, while the sum is 34.

The spelling of 401731225072 in words is "four hundred one billion, seven hundred thirty-one million, two hundred twenty-five thousand, seventy-two".