87725225 has 12 divisors (see below), whose sum is σ = 124319424. Its totient is φ = 60154320.

The previous prime is 87725221. The next prime is 87725233. The reversal of 87725225 is 52252778.

It is not a de Polignac number, because 87725225 - 2² = 87725221 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87725221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 250469 + ... + 250818.

It is an arithmetic number, because the mean of its divisors is an integer number (10359952).

Almost surely, 2^87725225 is an apocalyptic number.

It is an amenable number.

87725225 is a deficient number, since it is larger than the sum of its proper divisors (36594199).

87725225 is a wasteful number, since it uses less digits than its factorization.

87725225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 501304 (or 501299 counting only the distinct ones).

The product of its digits is 78400, while the sum is 38.

The square root of 87725225 is about 9366.1745125745. The cubic root of 87725225 is about 444.3325853331.

The spelling of 87725225 in words is "eighty-seven million, seven hundred twenty-five thousand, two hundred twenty-five".