981255625 has 45 divisors (see below), whose sum is σ = 1434382257. Its totient is φ = 669102000.

The previous prime is 981255563. The next prime is 981255641. The reversal of 981255625 is 526552189.

The square root of 981255625 is 31325.

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

It can be written as a sum of positive squares in 2 ways, for example, as 76930441 + 904325184 = 8771^2 + 30072^2 .

It is a de Polignac number, because none of the positive numbers 2^k-981255625 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 5481786 + ... + 5481964.

Almost surely, 2^981255625 is an apocalyptic number.

981255625 is the 31325-th square number.

981255625 is the 15663-rd centered octagonal number.

It is an amenable number.

981255625 is a deficient number, since it is larger than the sum of its proper divisors (453126632).

981255625 is an frugal number, since it uses more digits than its factorization.

981255625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 392 (or 191 counting only the distinct ones).

The product of its digits is 216000, while the sum is 43.

The cubic root of 981255625 is about 993.7124242480.

The spelling of 981255625 in words is "nine hundred eighty-one million, two hundred fifty-five thousand, six hundred twenty-five".