981425 has 12 divisors (see below), whose sum is σ = 1251036. Its totient is φ = 763200.

The previous prime is 981419. The next prime is 981437. The reversal of 981425 is 524189.

It can be written as a sum of positive squares in 6 ways, for example, as 26896 + 954529 = 164^2 + 977^2 .

It is not a de Polignac number, because 981425 - 2¹⁰ = 980401 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 981425.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 395 + ... + 1455.

It is an arithmetic number, because the mean of its divisors is an integer number (104253).

2⁹⁸¹⁴²⁵ is an apocalyptic number.

It is an amenable number.

981425 is a deficient number, since it is larger than the sum of its proper divisors (269611).

981425 is a wasteful number, since it uses less digits than its factorization.

981425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1108 (or 1103 counting only the distinct ones).

The product of its digits is 2880, while the sum is 29.

The square root of 981425 is about 990.6689659013. The cubic root of 981425 is about 99.3769596017.

It can be divided in two parts, 9814 and 25, that multiplied together give a triangular number (245350 = T₇₀₀).

The spelling of 981425 in words is "nine hundred eighty-one thousand, four hundred twenty-five".