87302225 has 12 divisors (see below), whose sum is σ = 114623244. Its totient is φ = 65733120.

The previous prime is 87302221. The next prime is 87302249. The reversal of 87302225 is 52220378.

It can be written as a sum of positive squares in 6 ways, for example, as 3323329 + 83978896 = 1823^2 + 9164^2 .

It is not a de Polignac number, because 87302225 - 2² = 87302221 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87302221) 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, 102284 + ... + 103133.

It is an arithmetic number, because the mean of its divisors is an integer number (9551937).

Almost surely, 2^87302225 is an apocalyptic number.

87302225 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

It is an amenable number.

87302225 is a deficient number, since it is larger than the sum of its proper divisors (27321019).

87302225 is a wasteful number, since it uses less digits than its factorization.

87302225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 205444 (or 205439 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 29.

The square root of 87302225 is about 9343.5659680873. The cubic root of 87302225 is about 443.6172624212.

The spelling of 87302225 in words is "eighty-seven million, three hundred two thousand, two hundred twenty-five".