1187725 has 24 divisors (see below), whose sum is σ = 1839168. Its totient is φ = 739200.

The previous prime is 1187723. The next prime is 1187741. The reversal of 1187725 is 5277811.

It is a happy number.

It is not a de Polignac number, because 1187725 - 2¹ = 1187723 is a prime.

It is a Duffinian number.

1187725 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1187723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1617 + ... + 2233.

It is an arithmetic number, because the mean of its divisors is an integer number (76632).

2^1187725 is an apocalyptic number.

It is an amenable number.

1187725 is a deficient number, since it is larger than the sum of its proper divisors (651443).

1187725 is a wasteful number, since it uses less digits than its factorization.

1187725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 645 (or 640 counting only the distinct ones).

The product of its digits is 3920, while the sum is 31.

The square root of 1187725 is about 1089.8279680757. The cubic root of 1187725 is about 105.9022773265.

The spelling of 1187725 in words is "one million, one hundred eighty-seven thousand, seven hundred twenty-five".