83625381 has 12 divisors (see below), whose sum is σ = 138048352. Its totient is φ = 47785896.

The previous prime is 83625359. The next prime is 83625389. The reversal of 83625381 is 18352638.

It is not a de Polignac number, because 83625381 - 2⁶ = 83625317 is a prime.

It is a super-2 number, since 2×83625381² = 13986408694790322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83625389) by changing a digit.

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, 663631 + ... + 663756.

Almost surely, 2^83625381 is an apocalyptic number.

It is an amenable number.

83625381 is a deficient number, since it is larger than the sum of its proper divisors (54422971).

83625381 is a wasteful number, since it uses less digits than its factorization.

83625381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1327400 (or 1327397 counting only the distinct ones).

The product of its digits is 34560, while the sum is 36.

The square root of 83625381 is about 9144.6914108678. The cubic root of 83625381 is about 437.2998917245.

The spelling of 83625381 in words is "eighty-three million, six hundred twenty-five thousand, three hundred eighty-one".