981525 has 24 divisors (see below), whose sum is σ = 1696320. Its totient is φ = 499840.

The previous prime is 981523. The next prime is 981527. The reversal of 981525 is 525189.

It is an interprime number because it is at equal distance from previous prime (981523) and next prime (981527).

It is not a de Polignac number, because 981525 - 2¹ = 981523 is a prime.

Its product of digits (3600) is a multiple of the sum of its prime divisors (600).

It is a junction number, because it is equal to n+sod(n) for n = 981492 and 981501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (981523) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1441 + ... + 2009.

It is an arithmetic number, because the mean of its divisors is an integer number (70680).

2⁹⁸¹⁵²⁵ is an apocalyptic number.

It is an amenable number.

981525 is a deficient number, since it is larger than the sum of its proper divisors (714795).

981525 is a wasteful number, since it uses less digits than its factorization.

981525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 605 (or 600 counting only the distinct ones).

The product of its digits is 3600, while the sum is 30.

The square root of 981525 is about 990.7194355619. The cubic root of 981525 is about 99.3803347478.

The spelling of 981525 in words is "nine hundred eighty-one thousand, five hundred twenty-five".