125538313 has 6 divisors (see below), whose sum is σ = 129719562. Its totient is φ = 121487760.

The previous prime is 125538293. The next prime is 125538337. The reversal of 125538313 is 313835521.

It can be written as a sum of positive squares in only one way, i.e., 81938704 + 43599609 = 9052^2 + 6603^2 .

It is a de Polignac number, because none of the positive numbers 2^k-125538313 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125538383) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 64356 + ... + 66277.

It is an arithmetic number, because the mean of its divisors is an integer number (21619927).

Almost surely, 2^125538313 is an apocalyptic number.

It is an amenable number.

125538313 is a deficient number, since it is larger than the sum of its proper divisors (4181249).

125538313 is an equidigital number, since it uses as much as digits as its factorization.

125538313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130695 (or 130664 counting only the distinct ones).

The product of its digits is 10800, while the sum is 31.

The square root of 125538313 is about 11204.3881135919. The cubic root of 125538313 is about 500.7167227926.

The spelling of 125538313 in words is "one hundred twenty-five million, five hundred thirty-eight thousand, three hundred thirteen".