400486451725 has 6 divisors (see below), whose sum is σ = 496603200170. Its totient is φ = 320389161360.

The previous prime is 400486451657. The next prime is 400486451737. The reversal of 400486451725 is 527154684004.

It can be written as a sum of positive squares in 3 ways, for example, as 127002427876 + 273484023849 = 356374^2 + 522957^2 .

It is not a de Polignac number, because 400486451725 - 2⁹ = 400486451213 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8009729010 + ... + 8009729059.

Almost surely, 2^400486451725 is an apocalyptic number.

It is an amenable number.

400486451725 is a deficient number, since it is larger than the sum of its proper divisors (96116748445).

400486451725 is a wasteful number, since it uses less digits than its factorization.

400486451725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16019458079 (or 16019458074 counting only the distinct ones).

The product of its (nonzero) digits is 1075200, while the sum is 46.

The spelling of 400486451725 in words is "four hundred billion, four hundred eighty-six million, four hundred fifty-one thousand, seven hundred twenty-five".