87800225 has 12 divisors (see below), whose sum is σ = 109346796. Its totient is φ = 69934080.

The previous prime is 87800213. The next prime is 87800227. The reversal of 87800225 is 52200878.

It can be written as a sum of positive squares in 6 ways, for example, as 8162449 + 79637776 = 2857^2 + 8924^2 .

It is not a de Polignac number, because 87800225 - 2¹⁸ = 87538081 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 87800191 and 87800200.

It is not an unprimeable number, because it can be changed into a prime (87800227) 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, 1712 + ... + 13361.

It is an arithmetic number, because the mean of its divisors is an integer number (9112233).

Almost surely, 2^87800225 is an apocalyptic number.

It is an amenable number.

87800225 is a deficient number, since it is larger than the sum of its proper divisors (21546571).

87800225 is a wasteful number, since it uses less digits than its factorization.

87800225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15316 (or 15311 counting only the distinct ones).

The product of its (nonzero) digits is 8960, while the sum is 32.

The square root of 87800225 is about 9370.1774262817. The cubic root of 87800225 is about 444.4591754955.

The spelling of 87800225 in words is "eighty-seven million, eight hundred thousand, two hundred twenty-five".