1224251125 has 8 divisors (see below), whose sum is σ = 1527865560. Its totient is φ = 979400800.

The previous prime is 1224251123. The next prime is 1224251137. The reversal of 1224251125 is 5211524221.

It can be written as a sum of positive squares in 4 ways, for example, as 167806116 + 1056445009 = 12954^2 + 32503^2 .

It is not a de Polignac number, because 1224251125 - 2¹ = 1224251123 is a prime.

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

It is a self number, because there is not a number n which added to its sum of digits gives 1224251125.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1224251123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4896880 + ... + 4897129.

It is an arithmetic number, because the mean of its divisors is an integer number (190983195).

Almost surely, 2^1224251125 is an apocalyptic number.

It is an amenable number.

1224251125 is a deficient number, since it is larger than the sum of its proper divisors (303614435).

1224251125 is an frugal number, since it uses more digits than its factorization.

1224251125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9794024 (or 9794014 counting only the distinct ones).

The product of its digits is 1600, while the sum is 25.

The square root of 1224251125 is about 34989.3001501888. The cubic root of 1224251125 is about 1069.7693988746.

Adding to 1224251125 its reverse (5211524221), we get a palindrome (6435775346).

The spelling of 1224251125 in words is "one billion, two hundred twenty-four million, two hundred fifty-one thousand, one hundred twenty-five".