83405425 has 12 divisors (see below), whose sum is σ = 103636720. Its totient is φ = 66586320.

The previous prime is 83405389. The next prime is 83405447. The reversal of 83405425 is 52450438.

It is not a de Polignac number, because 83405425 - 2⁷ = 83405297 is a prime.

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, 9886 + ... + 16264.

Almost surely, 2^83405425 is an apocalyptic number.

It is an amenable number.

83405425 is a deficient number, since it is larger than the sum of its proper divisors (20231295).

83405425 is a wasteful number, since it uses less digits than its factorization.

83405425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6912 (or 6907 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 31.

The square root of 83405425 is about 9132.6570613376. The cubic root of 83405425 is about 436.9161518075.

The spelling of 83405425 in words is "eighty-three million, four hundred five thousand, four hundred twenty-five".