71839225 has 12 divisors (see below), whose sum is σ = 89619264. Its totient is φ = 57123920.

The previous prime is 71839219. The next prime is 71839241. The reversal of 71839225 is 52293817.

It is not a de Polignac number, because 71839225 - 2³ = 71839217 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 4429 + ... + 12778.

It is an arithmetic number, because the mean of its divisors is an integer number (7468272).

Almost surely, 2^71839225 is an apocalyptic number.

It is an amenable number.

71839225 is a deficient number, since it is larger than the sum of its proper divisors (17780039).

71839225 is a wasteful number, since it uses less digits than its factorization.

71839225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17384 (or 17379 counting only the distinct ones).

The product of its digits is 30240, while the sum is 37.

The square root of 71839225 is about 8475.8023219044. The cubic root of 71839225 is about 415.7068806211.

The spelling of 71839225 in words is "seventy-one million, eight hundred thirty-nine thousand, two hundred twenty-five".