1188720725 has 12 divisors (see below), whose sum is σ = 1498179780. Its totient is φ = 935385600.

The previous prime is 1188720697. The next prime is 1188720727. The reversal of 1188720725 is 5270278811.

It can be written as a sum of positive squares in 6 ways, for example, as 595262404 + 593458321 = 24398^2 + 24361^2 .

It is not a de Polignac number, because 1188720725 - 2¹⁸ = 1188458581 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1188720727) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 388220 + ... + 391269.

It is an arithmetic number, because the mean of its divisors is an integer number (124848315).

Almost surely, 2^1188720725 is an apocalyptic number.

It is an amenable number.

1188720725 is a deficient number, since it is larger than the sum of its proper divisors (309459055).

1188720725 is an equidigital number, since it uses as much as digits as its factorization.

1188720725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 779560 (or 779555 counting only the distinct ones).

The product of its (nonzero) digits is 62720, while the sum is 41.

The square root of 1188720725 is about 34477.8294705453. The cubic root of 1188720725 is about 1059.3186332525.

The spelling of 1188720725 in words is "one billion, one hundred eighty-eight million, seven hundred twenty thousand, seven hundred twenty-five".