71548225 has 24 divisors (see below), whose sum is σ = 102368448. Its totient is φ = 48590400.

The previous prime is 71548199. The next prime is 71548231. The reversal of 71548225 is 52284517.

It is a happy number.

It is not a de Polignac number, because 71548225 - 2¹¹ = 71546177 is a prime.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16815 + ... + 20635.

It is an arithmetic number, because the mean of its divisors is an integer number (4265352).

Almost surely, 2^71548225 is an apocalyptic number.

71548225 is the 5350-th heptagonal number.

It is an amenable number.

71548225 is a deficient number, since it is larger than the sum of its proper divisors (30820223).

71548225 is a wasteful number, since it uses less digits than its factorization.

71548225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3945 (or 3940 counting only the distinct ones).

The product of its digits is 22400, while the sum is 34.

The square root of 71548225 is about 8458.6183860013. The cubic root of 71548225 is about 415.1448180897.

The spelling of 71548225 in words is "seventy-one million, five hundred forty-eight thousand, two hundred twenty-five".