987530625 has 45 divisors (see below), whose sum is σ = 1786735093. Its totient is φ = 525426000.

The previous prime is 987530623. The next prime is 987530659. The reversal of 987530625 is 526035789.

It is a happy number.

The square root of 987530625 is 31425.

It is a perfect power (a square), and thus also a powerful number.

987530625 is a `hidden beast` number, since 98 + 7 + 530 + 6 + 25 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 77422401 + 910108224 = 8799^2 + 30168^2 .

It is a tau number, because it is divible by the number of its divisors (45).

It is not a de Polignac number, because 987530625 - 2¹ = 987530623 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (987530623) by changing a digit.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 2356666 + ... + 2357084.

Almost surely, 2^987530625 is an apocalyptic number.

987530625 is the 31425-th square number.

987530625 is the 15713-rd centered octagonal number.

It is an amenable number.

987530625 is a deficient number, since it is larger than the sum of its proper divisors (799204468).

987530625 is an frugal number, since it uses more digits than its factorization.

987530625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 864 (or 427 counting only the distinct ones).

The product of its (nonzero) digits is 453600, while the sum is 45.

The cubic root of 987530625 is about 995.8261448374.

The spelling of 987530625 in words is "nine hundred eighty-seven million, five hundred thirty thousand, six hundred twenty-five".