71025012 has 96 divisors (see below), whose sum is σ = 195068160. Its totient is φ = 22581504.

The previous prime is 71025011. The next prime is 71025013. The reversal of 71025012 is 21052017.

It is an interprime number because it is at equal distance from previous prime (71025011) and next prime (71025013).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a zygodrome in base 3.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71025011) 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 31 ways as a sum of consecutive naturals, for example, 201028 + ... + 201380.

It is an arithmetic number, because the mean of its divisors is an integer number (2031960).

Almost surely, 2^71025012 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 71025012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (97534080).

71025012 is an abundant number, since it is smaller than the sum of its proper divisors (124043148).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

71025012 is a wasteful number, since it uses less digits than its factorization.

71025012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 401 (or 381 counting only the distinct ones).

The product of its (nonzero) digits is 140, while the sum is 18.

The square root of 71025012 is about 8427.6338316279. The cubic root of 71025012 is about 414.1303937094.

Adding to 71025012 its reverse (21052017), we get a palindrome (92077029).

The spelling of 71025012 in words is "seventy-one million, twenty-five thousand, twelve".