1250716820 has 12 divisors (see below), whose sum is σ = 2626505364. Its totient is φ = 500286720.

The previous prime is 1250716799. The next prime is 1250716837. The reversal of 1250716820 is 286170521.

It can be written as a sum of positive squares in 2 ways, for example, as 243796996 + 1006919824 = 15614^2 + 31732^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31267901 + ... + 31267940.

It is an arithmetic number, because the mean of its divisors is an integer number (218875447).

Almost surely, 2^1250716820 is an apocalyptic number.

1250716820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1250716820 is an abundant number, since it is smaller than the sum of its proper divisors (1375788544).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1250716820 is a wasteful number, since it uses less digits than its factorization.

1250716820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62535850 (or 62535848 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 32.

The square root of 1250716820 is about 35365.4749720685. The cubic root of 1250716820 is about 1077.4232179179.

The spelling of 1250716820 in words is "one billion, two hundred fifty million, seven hundred sixteen thousand, eight hundred twenty".