986540625 has 72 divisors (see below), whose sum is σ = 2035994688. Its totient is φ = 450900000.

The previous prime is 986540623. The next prime is 986540641. The reversal of 986540625 is 526045689.

986540625 is a `hidden beast` number, since 9 + 86 + 540 + 6 + 25 = 666.

It is not a de Polignac number, because 986540625 - 2¹ = 986540623 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

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

It is not an unprimeable number, because it can be changed into a prime (986540623) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 194370 + ... + 199380.

It is an arithmetic number, because the mean of its divisors is an integer number (28277704).

Almost surely, 2^986540625 is an apocalyptic number.

It is an amenable number.

986540625 is an abundant number, since it is smaller than the sum of its proper divisors (1049454063).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

986540625 is an equidigital number, since it uses as much as digits as its factorization.

986540625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5049 (or 5026 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 45.

The square root of 986540625 is about 31409.2442602492. The cubic root of 986540625 is about 995.4932614863.

The spelling of 986540625 in words is "nine hundred eighty-six million, five hundred forty thousand, six hundred twenty-five".