1248819725 has 12 divisors (see below), whose sum is σ = 1560361440. Its totient is φ = 991426800.

The previous prime is 1248819713. The next prime is 1248819731. The reversal of 1248819725 is 5279188421.

It is not a de Polignac number, because 1248819725 - 2⁴ = 1248819709 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1248819725.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 187385 + ... + 193934.

It is an arithmetic number, because the mean of its divisors is an integer number (130030120).

Almost surely, 2^1248819725 is an apocalyptic number.

It is an amenable number.

1248819725 is a deficient number, since it is larger than the sum of its proper divisors (311541715).

1248819725 is a wasteful number, since it uses less digits than its factorization.

1248819725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 381460 (or 381455 counting only the distinct ones).

The product of its digits is 322560, while the sum is 47.

The square root of 1248819725 is about 35338.6435082050. The cubic root of 1248819725 is about 1076.8781948622.

The spelling of 1248819725 in words is "one billion, two hundred forty-eight million, eight hundred nineteen thousand, seven hundred twenty-five".