1244541625 has 8 divisors (see below), whose sum is σ = 1553188104. Its totient is φ = 995633200.

The previous prime is 1244541533. The next prime is 1244541631. The reversal of 1244541625 is 5261454421.

It can be written as a sum of positive squares in 4 ways, for example, as 30437289 + 1214104336 = 5517^2 + 34844^2 .

It is not a de Polignac number, because 1244541625 - 2⁹ = 1244541113 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4978042 + ... + 4978291.

It is an arithmetic number, because the mean of its divisors is an integer number (194148513).

Almost surely, 2^1244541625 is an apocalyptic number.

It is an amenable number.

1244541625 is a deficient number, since it is larger than the sum of its proper divisors (308646479).

1244541625 is an frugal number, since it uses more digits than its factorization.

1244541625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9956348 (or 9956338 counting only the distinct ones).

The product of its digits is 38400, while the sum is 34.

The square root of 1244541625 is about 35278.0615255430. The cubic root of 1244541625 is about 1075.6470955302.

The spelling of 1244541625 in words is "one billion, two hundred forty-four million, five hundred forty-one thousand, six hundred twenty-five".