400523625205 has 24 divisors (see below), whose sum is σ = 530201392056. Its totient is φ = 290238199680.

The previous prime is 400523625197. The next prime is 400523625311. The reversal of 400523625205 is 502526325004.

It can be written as a sum of positive squares in 4 ways, for example, as 995970481 + 399527654724 = 31559^2 + 632082^2 .

It is not a de Polignac number, because 400523625205 - 2³ = 400523625197 is a prime.

It is a super-2 number, since 2×400523625205² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1027402 + ... + 1362571.

It is an arithmetic number, because the mean of its divisors is an integer number (22091724669).

Almost surely, 2^400523625205 is an apocalyptic number.

It is an amenable number.

400523625205 is a deficient number, since it is larger than the sum of its proper divisors (129677766851).

400523625205 is a wasteful number, since it uses less digits than its factorization.

400523625205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2390277 (or 2390266 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 34.

The spelling of 400523625205 in words is "four hundred billion, five hundred twenty-three million, six hundred twenty-five thousand, two hundred five".