83909425 has 12 divisors (see below), whose sum is σ = 104547376. Its totient is φ = 66805200.

The previous prime is 83909417. The next prime is 83909447. The reversal of 83909425 is 52490938.

It is a happy number.

It is not a de Polignac number, because 83909425 - 2³ = 83909417 is a prime.

It is a Duffinian 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, 2679 + ... + 13228.

Almost surely, 2^83909425 is an apocalyptic number.

It is an amenable number.

83909425 is a deficient number, since it is larger than the sum of its proper divisors (20637951).

83909425 is a wasteful number, since it uses less digits than its factorization.

83909425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16128 (or 16123 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 40.

The square root of 83909425 is about 9160.2087858302. The cubic root of 83909425 is about 437.7944466847.

The spelling of 83909425 in words is "eighty-three million, nine hundred nine thousand, four hundred twenty-five".