71530025 has 12 divisors (see below), whose sum is σ = 101368512. Its totient is φ = 49049040.

The previous prime is 71530001. The next prime is 71530049. The reversal of 71530025 is 52003517.

It is an interprime number because it is at equal distance from previous prime (71530001) and next prime (71530049).

It is not a de Polignac number, because 71530025 - 2¹⁰ = 71529001 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 204197 + ... + 204546.

It is an arithmetic number, because the mean of its divisors is an integer number (8447376).

Almost surely, 2^71530025 is an apocalyptic number.

It is an amenable number.

71530025 is a deficient number, since it is larger than the sum of its proper divisors (29838487).

71530025 is a wasteful number, since it uses less digits than its factorization.

71530025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 408760 (or 408755 counting only the distinct ones).

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

The square root of 71530025 is about 8457.5424917644. The cubic root of 71530025 is about 415.1096144377.

The spelling of 71530025 in words is "seventy-one million, five hundred thirty thousand, twenty-five".