1331126125 has 16 divisors (see below), whose sum is σ = 1898567424. Its totient is φ = 912771600.

The previous prime is 1331126107. The next prime is 1331126179. The reversal of 1331126125 is 5216211331.

It is a happy number.

It is not a de Polignac number, because 1331126125 - 2¹⁹ = 1330601837 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1331126125.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 759769 + ... + 761518.

It is an arithmetic number, because the mean of its divisors is an integer number (118660464).

Almost surely, 2^1331126125 is an apocalyptic number.

It is an amenable number.

1331126125 is a deficient number, since it is larger than the sum of its proper divisors (567441299).

1331126125 is an equidigital number, since it uses as much as digits as its factorization.

1331126125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1521309 (or 1521299 counting only the distinct ones).

The product of its digits is 1080, while the sum is 25.

The square root of 1331126125 is about 36484.6012037956. The cubic root of 1331126125 is about 1100.0347440816.

Adding to 1331126125 its reverse (5216211331), we get a palindrome (6547337456).

The spelling of 1331126125 in words is "one billion, three hundred thirty-one million, one hundred twenty-six thousand, one hundred twenty-five".