87025005 has 24 divisors (see below), whose sum is σ = 152406072. Its totient is φ = 45932544.

The previous prime is 87024961. The next prime is 87025007. The reversal of 87025005 is 50052078.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1258884 + 85766121 = 1122^2 + 9261^2 .

It is a de Polignac number, because none of the positive numbers 2^k-87025005 is a prime.

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 87025005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87025007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5604 + ... + 14333.

It is an arithmetic number, because the mean of its divisors is an integer number (6350253).

Almost surely, 2^87025005 is an apocalyptic number.

It is an amenable number.

87025005 is a deficient number, since it is larger than the sum of its proper divisors (65381067).

87025005 is a wasteful number, since it uses less digits than its factorization.

87025005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20045 (or 20042 counting only the distinct ones).

The product of its (nonzero) digits is 2800, while the sum is 27.

The square root of 87025005 is about 9328.7193654863. The cubic root of 87025005 is about 443.1472095764.

The spelling of 87025005 in words is "eighty-seven million, twenty-five thousand, five".