400525323140 has 12 divisors (see below), whose sum is σ = 841103178636. Its totient is φ = 160210129248.

The previous prime is 400525323127. The next prime is 400525323217. The reversal of 400525323140 is 41323525004.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 233814799936 + 166710523204 = 483544^2 + 408302^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10013133059 + ... + 10013133098.

It is an arithmetic number, because the mean of its divisors is an integer number (70091931553).

Almost surely, 2^400525323140 is an apocalyptic number.

It is an amenable number.

400525323140 is an abundant number, since it is smaller than the sum of its proper divisors (440577855496).

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

400525323140 is a wasteful number, since it uses less digits than its factorization.

400525323140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20026266166 (or 20026266164 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 29.

Adding to 400525323140 its reverse (41323525004), we get a palindrome (441848848144).

The spelling of 400525323140 in words is "four hundred billion, five hundred twenty-five million, three hundred twenty-three thousand, one hundred forty".