71148225 has 24 divisors (see below), whose sum is σ = 120815680. Its totient is φ = 36918720.

The previous prime is 71148221. The next prime is 71148241. The reversal of 71148225 is 52284117.

It is not a de Polignac number, because 71148225 - 2² = 71148221 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 71148192 and 71148201.

It is not an unprimeable number, because it can be changed into a prime (71148221) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10045 + ... + 15594.

Almost surely, 2^71148225 is an apocalyptic number.

71148225 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

It is an amenable number.

71148225 is a deficient number, since it is larger than the sum of its proper divisors (49667455).

71148225 is a wasteful number, since it uses less digits than its factorization.

71148225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25689 (or 25684 counting only the distinct ones).

The product of its digits is 4480, while the sum is 30.

The square root of 71148225 is about 8434.9407229690. The cubic root of 71148225 is about 414.3697308512.

The spelling of 71148225 in words is "seventy-one million, one hundred forty-eight thousand, two hundred twenty-five".