1250561020 has 12 divisors (see below), whose sum is σ = 2626178184. Its totient is φ = 500224400.

The previous prime is 1250561017. The next prime is 1250561027. The reversal of 1250561020 is 201650521.

It is a junction number, because it is equal to n+sod(n) for n = 1250560982 and 1250561000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1250561027) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31264006 + ... + 31264045.

It is an arithmetic number, because the mean of its divisors is an integer number (218848182).

Almost surely, 2^1250561020 is an apocalyptic number.

1250561020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1250561020 is an abundant number, since it is smaller than the sum of its proper divisors (1375617164).

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

1250561020 is a wasteful number, since it uses less digits than its factorization.

1250561020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62528060 (or 62528058 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 22.

The square root of 1250561020 is about 35363.2721902258. The cubic root of 1250561020 is about 1077.3784783719.

The spelling of 1250561020 in words is "one billion, two hundred fifty million, five hundred sixty-one thousand, twenty".