531725229126 has 192 divisors, whose sum is σ = 1464966537216. Its totient is φ = 135591667200.

The previous prime is 531725229089. The next prime is 531725229131. The reversal of 531725229126 is 621922527135.

531725229126 is a `hidden beast` number, since 5 + 3 + 17 + 2 + 522 + 91 + 26 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 67073775 + ... + 67081701.

It is an arithmetic number, because the mean of its divisors is an integer number (7630034048).

Almost surely, 2^531725229126 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 531725229126, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (732483268608).

531725229126 is an abundant number, since it is smaller than the sum of its proper divisors (933241308090).

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

531725229126 is a wasteful number, since it uses less digits than its factorization.

531725229126 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9307 (or 9304 counting only the distinct ones).

The product of its digits is 453600, while the sum is 45.

The spelling of 531725229126 in words is "five hundred thirty-one billion, seven hundred twenty-five million, two hundred twenty-nine thousand, one hundred twenty-six".