125216013 has 8 divisors (see below), whose sum is σ = 179797408. Its totient is φ = 77055984.

The previous prime is 125216011. The next prime is 125216017. The reversal of 125216013 is 310612521.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 125216013 - 2¹ = 125216011 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125216011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1605295 + ... + 1605372.

It is an arithmetic number, because the mean of its divisors is an integer number (22474676).

Almost surely, 2^125216013 is an apocalyptic number.

125216013 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

125216013 is a deficient number, since it is larger than the sum of its proper divisors (54581395).

125216013 is a wasteful number, since it uses less digits than its factorization.

125216013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3210683.

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 125216013 is about 11189.9961125999. The cubic root of 125216013 is about 500.2878515845.

Adding to 125216013 its reverse (310612521), we get a palindrome (435828534).

The spelling of 125216013 in words is "one hundred twenty-five million, two hundred sixteen thousand, thirteen".