71776225 has 6 divisors (see below), whose sum is σ = 89002550. Its totient is φ = 57420960.

The previous prime is 71776223. The next prime is 71776231. The reversal of 71776225 is 52267717.

It can be written as a sum of positive squares in 3 ways, for example, as 559504 + 71216721 = 748^2 + 8439^2 .

It is not a de Polignac number, because 71776225 - 2¹ = 71776223 is a prime.

It is not an unprimeable number, because it can be changed into a prime (71776223) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1435500 + ... + 1435549.

Almost surely, 2^71776225 is an apocalyptic number.

It is an amenable number.

71776225 is a deficient number, since it is larger than the sum of its proper divisors (17226325).

71776225 is a wasteful number, since it uses less digits than its factorization.

71776225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2871059 (or 2871054 counting only the distinct ones).

The product of its digits is 41160, while the sum is 37.

The square root of 71776225 is about 8472.0850444268. The cubic root of 71776225 is about 415.5853258905.

The spelling of 71776225 in words is "seventy-one million, seven hundred seventy-six thousand, two hundred twenty-five".