87134225 has 12 divisors (see below), whose sum is σ = 110683020. Its totient is φ = 68006400.

The previous prime is 87134221. The next prime is 87134233. The reversal of 87134225 is 52243178.

It can be written as a sum of positive squares in 6 ways, for example, as 13191424 + 73942801 = 3632^2 + 8599^2 .

It is not a de Polignac number, because 87134225 - 2² = 87134221 is a prime.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 87134191 and 87134200.

It is not an unprimeable number, because it can be changed into a prime (87134221) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 41480 + ... + 43529.

It is an arithmetic number, because the mean of its divisors is an integer number (9223585).

Almost surely, 2^87134225 is an apocalyptic number.

It is an amenable number.

87134225 is a deficient number, since it is larger than the sum of its proper divisors (23548795).

87134225 is a wasteful number, since it uses less digits than its factorization.

87134225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85060 (or 85055 counting only the distinct ones).

The product of its digits is 13440, while the sum is 32.

The square root of 87134225 is about 9334.5714952535. The cubic root of 87134225 is about 443.3325214651.

The spelling of 87134225 in words is "eighty-seven million, one hundred thirty-four thousand, two hundred twenty-five".