50725013 has 2 divisors, whose sum is σ = 50725014. Its totient is φ = 50725012.

The previous prime is 50725009. The next prime is 50725043. The reversal of 50725013 is 31052705.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 50367409 + 357604 = 7097^2 + 598^2 .

It is a cyclic number.

It is not a de Polignac number, because 50725013 - 2² = 50725009 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 50725013.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (50725043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25362506 + 25362507.

It is an arithmetic number, because the mean of its divisors is an integer number (25362507).

Almost surely, 2^50725013 is an apocalyptic number.

It is an amenable number.

50725013 is a deficient number, since it is larger than the sum of its proper divisors (1).

50725013 is an equidigital number, since it uses as much as digits as its factorization.

50725013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1050, while the sum is 23.

The square root of 50725013 is about 7122.1494648736. The cubic root of 50725013 is about 370.1752590702.

Adding to 50725013 its reverse (31052705), we get a palindrome (81777718).

The spelling of 50725013 in words is "fifty million, seven hundred twenty-five thousand, thirteen".