1144636625 has 64 divisors (see below), whose sum is σ = 1621900800. Its totient is φ = 799200000.

The previous prime is 1144636621. The next prime is 1144636679. The reversal of 1144636625 is 5266364411.

It is not a de Polignac number, because 1144636625 - 2² = 1144636621 is a prime.

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1144636621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 7580300 + ... + 7580450.

It is an arithmetic number, because the mean of its divisors is an integer number (25342200).

Almost surely, 2^1144636625 is an apocalyptic number.

It is an amenable number.

1144636625 is a deficient number, since it is larger than the sum of its proper divisors (477264175).

1144636625 is a wasteful number, since it uses less digits than its factorization.

1144636625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 363 (or 353 counting only the distinct ones).

The product of its digits is 103680, while the sum is 38.

The square root of 1144636625 is about 33832.4788479946. The cubic root of 1144636625 is about 1046.0582748518.

The spelling of 1144636625 in words is "one billion, one hundred forty-four million, six hundred thirty-six thousand, six hundred twenty-five".