83687425 has 12 divisors (see below), whose sum is σ = 105475516. Its totient is φ = 65851200.

The previous prime is 83687423. The next prime is 83687431. The reversal of 83687425 is 52478638.

It can be written as a sum of positive squares in 6 ways, for example, as 804609 + 82882816 = 897^2 + 9104^2 .

It is not a de Polignac number, because 83687425 - 2¹ = 83687423 is a prime.

It is a hoax number, since the sum of its digits (43) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (83687423) 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, 25914 + ... + 28963.

Almost surely, 2^83687425 is an apocalyptic number.

It is an amenable number.

83687425 is a deficient number, since it is larger than the sum of its proper divisors (21788091).

83687425 is a wasteful number, since it uses less digits than its factorization.

83687425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54948 (or 54943 counting only the distinct ones).

The product of its digits is 322560, while the sum is 43.

The square root of 83687425 is about 9148.0831325475. The cubic root of 83687425 is about 437.4080133137.

The spelling of 83687425 in words is "eighty-three million, six hundred eighty-seven thousand, four hundred twenty-five".