1125340405 has 16 divisors (see below), whose sum is σ = 1558312704. Its totient is φ = 764167680.

The previous prime is 1125340399. The next prime is 1125340439. The reversal of 1125340405 is 5040435211.

It is a happy number.

It is not a de Polignac number, because 1125340405 - 2³ = 1125340397 is a prime.

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 1125340405.

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, 152476 + ... + 159685.

It is an arithmetic number, because the mean of its divisors is an integer number (97394544).

Almost surely, 2^1125340405 is an apocalyptic number.

It is an amenable number.

1125340405 is a deficient number, since it is larger than the sum of its proper divisors (432972299).

1125340405 is a wasteful number, since it uses less digits than its factorization.

1125340405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 312276.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 1125340405 is about 33546.0937368272. The cubic root of 1125340405 is about 1040.1468003451.

Adding to 1125340405 its reverse (5040435211), we get a palindrome (6165775616).

The spelling of 1125340405 in words is "one billion, one hundred twenty-five million, three hundred forty thousand, four hundred five".