1264845125 has 12 divisors (see below), whose sum is σ = 1579023108. Its totient is φ = 1011558000.

The previous prime is 1264845097. The next prime is 1264845137. The reversal of 1264845125 is 5215484621.

It is a happy number.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 6 ways, for example, as 1019014084 + 245831041 = 31922^2 + 15679^2 .

It is not a de Polignac number, because 1264845125 - 2⁶ = 1264845061 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 396035 + ... + 399215.

It is an arithmetic number, because the mean of its divisors is an integer number (131585259).

Almost surely, 2^1264845125 is an apocalyptic number.

It is an amenable number.

1264845125 is a deficient number, since it is larger than the sum of its proper divisors (314177983).

1264845125 is an frugal number, since it uses more digits than its factorization.

1264845125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6377 (or 3186 counting only the distinct ones).

The product of its digits is 76800, while the sum is 38.

The square root of 1264845125 is about 35564.6611821342. The cubic root of 1264845125 is about 1081.4649544238.

The spelling of 1264845125 in words is "one billion, two hundred sixty-four million, eight hundred forty-five thousand, one hundred twenty-five".