82404425 has 12 divisors (see below), whose sum is σ = 107560080. Its totient is φ = 62453520.

The previous prime is 82404401. The next prime is 82404431. The reversal of 82404425 is 52440428.

It is not a de Polignac number, because 82404425 - 2¹⁰ = 82403401 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 86267 + ... + 87216.

It is an arithmetic number, because the mean of its divisors is an integer number (8963340).

Almost surely, 2^82404425 is an apocalyptic number.

It is an amenable number.

82404425 is a deficient number, since it is larger than the sum of its proper divisors (25155655).

82404425 is a wasteful number, since it uses less digits than its factorization.

82404425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173512 (or 173507 counting only the distinct ones).

The product of its (nonzero) digits is 10240, while the sum is 29.

The square root of 82404425 is about 9077.6883070526. The cubic root of 82404425 is about 435.1612121015.

The spelling of 82404425 in words is "eighty-two million, four hundred four thousand, four hundred twenty-five".