125040051313 has 4 divisors (see below), whose sum is σ = 125057918628. Its totient is φ = 125022184000.

The previous prime is 125040051307. The next prime is 125040051317. The reversal of 125040051313 is 313150040521.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 313150040521 = 71 ⋅4410563951.

It can be written as a sum of positive squares in 2 ways, for example, as 78886833424 + 46153217889 = 280868^2 + 214833^2 .

It is a cyclic number.

It is not a de Polignac number, because 125040051313 - 2²¹ = 125037954161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125040051317) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8923156 + ... + 8937157.

It is an arithmetic number, because the mean of its divisors is an integer number (31264479657).

Almost surely, 2^125040051313 is an apocalyptic number.

It is an amenable number.

125040051313 is a deficient number, since it is larger than the sum of its proper divisors (17867315).

125040051313 is an equidigital number, since it uses as much as digits as its factorization.

125040051313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17867314.

The product of its (nonzero) digits is 1800, while the sum is 25.

Adding to 125040051313 its reverse (313150040521), we get a palindrome (438190091834).

The spelling of 125040051313 in words is "one hundred twenty-five billion, forty million, fifty-one thousand, three hundred thirteen".