71942825 has 6 divisors (see below), whose sum is σ = 89209134. Its totient is φ = 57554240.

The previous prime is 71942807. The next prime is 71942831. The reversal of 71942825 is 52824917.

It can be written as a sum of positive squares in 3 ways, for example, as 1315609 + 70627216 = 1147^2 + 8404^2 .

It is not a de Polignac number, because 71942825 - 2¹² = 71938729 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 (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1438832 + ... + 1438881.

It is an arithmetic number, because the mean of its divisors is an integer number (14868189).

Almost surely, 2^71942825 is an apocalyptic number.

It is an amenable number.

71942825 is a deficient number, since it is larger than the sum of its proper divisors (17266309).

71942825 is a wasteful number, since it uses less digits than its factorization.

71942825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2877723 (or 2877718 counting only the distinct ones).

The product of its digits is 40320, while the sum is 38.

The square root of 71942825 is about 8481.9116359462. The cubic root of 71942825 is about 415.9066161967.

The spelling of 71942825 in words is "seventy-one million, nine hundred forty-two thousand, eight hundred twenty-five".