400520241325 has 12 divisors (see below), whose sum is σ = 496653117300. Its totient is φ = 320411020160.

The previous prime is 400520241311. The next prime is 400520241421. The reversal of 400520241325 is 523142025004.

It can be written as a sum of positive squares in 6 ways, for example, as 19641181609 + 380879059716 = 140147^2 + 617154^2 .

It is not a de Polignac number, because 400520241325 - 2¹¹ = 400520239277 is a prime.

It is a super-2 number, since 2×400520241325² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 400520241293 and 400520241302.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2492001 + ... + 2647849.

It is an arithmetic number, because the mean of its divisors is an integer number (41387759775).

Almost surely, 2^400520241325 is an apocalyptic number.

It is an amenable number.

400520241325 is a deficient number, since it is larger than the sum of its proper divisors (96132875975).

400520241325 is a wasteful number, since it uses less digits than its factorization.

400520241325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258656 (or 258651 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 28.

Adding to 400520241325 its reverse (523142025004), we get a palindrome (923662266329).

The spelling of 400520241325 in words is "four hundred billion, five hundred twenty million, two hundred forty-one thousand, three hundred twenty-five".