1240443625 has 16 divisors (see below), whose sum is σ = 1558486800. Its totient is φ = 985680000.

The previous prime is 1240443577. The next prime is 1240443637. The reversal of 1240443625 is 5263440421.

It can be written as a sum of positive squares in 8 ways, for example, as 472932009 + 767511616 = 21747^2 + 27704^2 .

It is not a de Polignac number, because 1240443625 - 2⁷ = 1240443497 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14676 + ... + 51925.

It is an arithmetic number, because the mean of its divisors is an integer number (97405425).

Almost surely, 2^1240443625 is an apocalyptic number.

It is an amenable number.

1240443625 is a deficient number, since it is larger than the sum of its proper divisors (318043175).

1240443625 is an equidigital number, since it uses as much as digits as its factorization.

1240443625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66765 (or 66755 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 31.

The square root of 1240443625 is about 35219.9322117462. The cubic root of 1240443625 is about 1074.4651747410.

The spelling of 1240443625 in words is "one billion, two hundred forty million, four hundred forty-three thousand, six hundred twenty-five".