87425538 has 16 divisors (see below), whose sum is σ = 175504320. Its totient is φ = 29032976.

The previous prime is 87425537. The next prime is 87425581. The reversal of 87425538 is 83552478.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 87425538.

It is not an unprimeable number, because it can be changed into a prime (87425531) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25470 + ... + 28697.

It is an arithmetic number, because the mean of its divisors is an integer number (10969020).

Almost surely, 2^87425538 is an apocalyptic number.

87425538 is an abundant number, since it is smaller than the sum of its proper divisors (88078782).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

87425538 is a wasteful number, since it uses less digits than its factorization.

87425538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54441.

The product of its digits is 268800, while the sum is 42.

The square root of 87425538 is about 9350.1624584817. The cubic root of 87425538 is about 443.8260315929.

The spelling of 87425538 in words is "eighty-seven million, four hundred twenty-five thousand, five hundred thirty-eight".