1144646625 has 32 divisors (see below), whose sum is σ = 1910308608. Its totient is φ = 608678400.

The previous prime is 1144646597. The next prime is 1144646663. The reversal of 1144646625 is 5266464411.

1144646625 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1144646625 - 2¹³ = 1144638433 is a prime.

It is a super-2 number, since 2×1144646625² = 2620431792247781250, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 128052 + ... + 136698.

It is an arithmetic number, because the mean of its divisors is an integer number (59697144).

Almost surely, 2^1144646625 is an apocalyptic number.

1144646625 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1144646625 is a deficient number, since it is larger than the sum of its proper divisors (765661983).

1144646625 is an equidigital number, since it uses as much as digits as its factorization.

1144646625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9018 (or 9008 counting only the distinct ones).

The product of its digits is 138240, while the sum is 39.

The square root of 1144646625 is about 33832.6266346555. The cubic root of 1144646625 is about 1046.0613211031.

The spelling of 1144646625 in words is "one billion, one hundred forty-four million, six hundred forty-six thousand, six hundred twenty-five".