3125723136 has 120 divisors (see below), whose sum is σ = 8776313280. Its totient is φ = 986775552.

The previous prime is 3125723119. The next prime is 3125723137. The reversal of 3125723136 is 6313275213.

It is a junction number, because it is equal to n+sod(n) for n = 3125723097 and 3125723106.

It is not an unprimeable number, because it can be changed into a prime (3125723137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 932215 + ... + 935561.

It is an arithmetic number, because the mean of its divisors is an integer number (73135944).

Almost surely, 2^3125723136 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3125723136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4388156640).

3125723136 is an abundant number, since it is smaller than the sum of its proper divisors (5650590144).

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

3125723136 is an equidigital number, since it uses as much as digits as its factorization.

3125723136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3397 (or 3371 counting only the distinct ones).

The product of its digits is 22680, while the sum is 33.

The square root of 3125723136 is about 55908.1669883748. The cubic root of 3125723136 is about 1462.1216317419.

Adding to 3125723136 its reverse (6313275213), we get a palindrome (9438998349).

The spelling of 3125723136 in words is "three billion, one hundred twenty-five million, seven hundred twenty-three thousand, one hundred thirty-six".