401251956452 has 6 divisors (see below), whose sum is σ = 702190923798. Its totient is φ = 200625978224.

The previous prime is 401251956449. The next prime is 401251956463. The reversal of 401251956452 is 254659152104.

It can be written as a sum of positive squares in only one way, i.e., 303197801956 + 98054154496 = 550634^2 + 313136^2 .

It is a super-2 number, since 2×401251956452² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50156494553 + ... + 50156494560.

It is an arithmetic number, because the mean of its divisors is an integer number (117031820633).

Almost surely, 2^401251956452 is an apocalyptic number.

It is an amenable number.

401251956452 is a deficient number, since it is larger than the sum of its proper divisors (300938967346).

401251956452 is a wasteful number, since it uses less digits than its factorization.

401251956452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100312989117 (or 100312989115 counting only the distinct ones).

The product of its (nonzero) digits is 432000, while the sum is 44.

The spelling of 401251956452 in words is "four hundred one billion, two hundred fifty-one million, nine hundred fifty-six thousand, four hundred fifty-two".