71025013 has 2 divisors, whose sum is σ = 71025014. Its totient is φ = 71025012.

The previous prime is 71025011. The next prime is 71025041. The reversal of 71025013 is 31052017.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 43125489 + 27899524 = 6567^2 + 5282^2 .

It is an emirp because it is prime and its reverse (31052017) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 71025013 - 2¹ = 71025011 is a prime.

Together with 71025011, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71025011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35512506 + 35512507.

It is an arithmetic number, because the mean of its divisors is an integer number (35512507).

Almost surely, 2^71025013 is an apocalyptic number.

It is an amenable number.

71025013 is a deficient number, since it is larger than the sum of its proper divisors (1).

71025013 is an equidigital number, since it uses as much as digits as its factorization.

71025013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 210, while the sum is 19.

The square root of 71025013 is about 8427.6338909566. The cubic root of 71025013 is about 414.1303956530.

The spelling of 71025013 in words is "seventy-one million, twenty-five thousand, thirteen".