981582625 has 8 divisors (see below), whose sum is σ = 1225015272. Its totient is φ = 785266000.

The previous prime is 981582611. The next prime is 981582671. The reversal of 981582625 is 526285189.

It can be written as a sum of positive squares in 4 ways, for example, as 10387729 + 971194896 = 3223^2 + 31164^2 .

It is not a de Polignac number, because 981582625 - 2²⁷ = 847364897 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3926206 + ... + 3926455.

It is an arithmetic number, because the mean of its divisors is an integer number (153126909).

Almost surely, 2^981582625 is an apocalyptic number.

It is an amenable number.

981582625 is a deficient number, since it is larger than the sum of its proper divisors (243432647).

981582625 is an equidigital number, since it uses as much as digits as its factorization.

981582625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7852676 (or 7852666 counting only the distinct ones).

The product of its digits is 345600, while the sum is 46.

The square root of 981582625 is about 31330.2190384938. The cubic root of 981582625 is about 993.8227957169.

The spelling of 981582625 in words is "nine hundred eighty-one million, five hundred eighty-two thousand, six hundred twenty-five".