87089425 has 6 divisors (see below), whose sum is σ = 107990918. Its totient is φ = 69671520.

The previous prime is 87089423. The next prime is 87089459. The reversal of 87089425 is 52498078.

It can be written as a sum of positive squares in 3 ways, for example, as 77841 + 87011584 = 279^2 + 9328^2 .

It is not a de Polignac number, because 87089425 - 2¹ = 87089423 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87089423) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1741764 + ... + 1741813.

Almost surely, 2^87089425 is an apocalyptic number.

It is an amenable number.

87089425 is a deficient number, since it is larger than the sum of its proper divisors (20901493).

87089425 is a wasteful number, since it uses less digits than its factorization.

87089425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3483587 (or 3483582 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 43.

The square root of 87089425 is about 9332.1715050678. The cubic root of 87089425 is about 443.2565287392.

The spelling of 87089425 in words is "eighty-seven million, eighty-nine thousand, four hundred twenty-five".