31748825125 has 32 divisors (see below), whose sum is σ = 40046703840. Its totient is φ = 25127884800.

The previous prime is 31748825107. The next prime is 31748825131. The reversal of 31748825125 is 52152884713.

It is a happy number.

It is a Cunningham number, because it is equal to 178182²+1.

It can be written as a sum of positive squares in 16 ways, for example, as 11057153409 + 20691671716 = 105153^2 + 143846^2 .

It is not a de Polignac number, because 31748825125 - 2²⁷ = 31614607397 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11947797 + ... + 11950453.

It is an arithmetic number, because the mean of its divisors is an integer number (1251459495).

Almost surely, 2^31748825125 is an apocalyptic number.

It is an amenable number.

31748825125 is a deficient number, since it is larger than the sum of its proper divisors (8297878715).

31748825125 is a wasteful number, since it uses less digits than its factorization.

31748825125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3658 (or 3648 counting only the distinct ones).

The product of its digits is 537600, while the sum is 46.

The spelling of 31748825125 in words is "thirty-one billion, seven hundred forty-eight million, eight hundred twenty-five thousand, one hundred twenty-five".