1250638825 has 12 divisors (see below), whose sum is σ = 1551259468. Its totient is φ = 1000209600.

The previous prime is 1250638819. The next prime is 1250638841. The reversal of 1250638825 is 5288360521.

It can be written as a sum of positive squares in 6 ways, for example, as 200165904 + 1050472921 = 14148^2 + 32411^2 .

It is not a de Polignac number, because 1250638825 - 2⁹ = 1250638313 is a prime.

It is a super-4 number, since 4×1250638825⁴ (a number of 37 digits) contains 4444 as substring.

It is a Duffinian 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, 118255 + ... + 128395.

Almost surely, 2^1250638825 is an apocalyptic number.

It is an amenable number.

1250638825 is a deficient number, since it is larger than the sum of its proper divisors (300620643).

1250638825 is a wasteful number, since it uses less digits than its factorization.

1250638825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15084 (or 15079 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 40.

The square root of 1250638825 is about 35364.3722551384. The cubic root of 1250638825 is about 1077.4008213291.

The spelling of 1250638825 in words is "one billion, two hundred fifty million, six hundred thirty-eight thousand, eight hundred twenty-five".