987725 has 6 divisors (see below), whose sum is σ = 1224810. Its totient is φ = 790160.

The previous prime is 987713. The next prime is 987739. The reversal of 987725 is 527789.

987725 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 9604 + 978121 = 98^2 + 989^2 .

It is a de Polignac number, because none of the positive numbers 2^k-987725 is a prime.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 987725.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 19730 + ... + 19779.

It is an arithmetic number, because the mean of its divisors is an integer number (204135).

2⁹⁸⁷⁷²⁵ is an apocalyptic number.

It is an amenable number.

987725 is a deficient number, since it is larger than the sum of its proper divisors (237085).

987725 is a wasteful number, since it uses less digits than its factorization.

987725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39519 (or 39514 counting only the distinct ones).

The product of its digits is 35280, while the sum is 38.

The square root of 987725 is about 993.8435490559. The cubic root of 987725 is about 99.5891476485.

The spelling of 987725 in words is "nine hundred eighty-seven thousand, seven hundred twenty-five".