87425 has 12 divisors (see below), whose sum is σ = 117180. Its totient is φ = 64320.

The previous prime is 87421. The next prime is 87427. The reversal of 87425 is 52478.

87425 = 45² + 46² + ... + 70².

It can be written as a sum of positive squares in 6 ways, for example, as 27889 + 59536 = 167^2 + 244^2 .

It is not a de Polignac number, because 87425 - 2² = 87421 is a prime.

It is a hoax number, since the sum of its digits (26) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 87394 and 87403.

It is not an unprimeable number, because it can be changed into a prime (87421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 191 + ... + 459.

It is an arithmetic number, because the mean of its divisors is an integer number (9765).

2⁸⁷⁴²⁵ is an apocalyptic number.

It is an amenable number.

87425 is a deficient number, since it is larger than the sum of its proper divisors (29755).

87425 is a wasteful number, since it uses less digits than its factorization.

87425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 292 (or 287 counting only the distinct ones).

The product of its digits is 2240, while the sum is 26.

The square root of 87425 is about 295.6771888395. The cubic root of 87425 is about 44.3825121184.

It can be divided in two parts, 87 and 425, that added together give a 9-th power (512 = 2⁹).

The spelling of 87425 in words is "eighty-seven thousand, four hundred twenty-five".