1270821325 has 12 divisors (see below), whose sum is σ = 1630157940. Its totient is φ = 981599360.

The previous prime is 1270821317. The next prime is 1270821341. The reversal of 1270821325 is 5231280721.

It can be written as a sum of positive squares in 6 ways, for example, as 10074276 + 1260747049 = 3174^2 + 35507^2 .

It is not a de Polignac number, because 1270821325 - 2³ = 1270821317 is a prime.

It is a super-2 number, since 2×1270821325² = 3229973680149511250, which contains 22 as substring.

It is a congruent number.

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 11 ways as a sum of consecutive naturals, for example, 875704 + ... + 877153.

It is an arithmetic number, because the mean of its divisors is an integer number (135846495).

Almost surely, 2^1270821325 is an apocalyptic number.

It is an amenable number.

1270821325 is a deficient number, since it is larger than the sum of its proper divisors (359336615).

1270821325 is a wasteful number, since it uses less digits than its factorization.

1270821325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1752896 (or 1752891 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 31.

The square root of 1270821325 is about 35648.5809675504. The cubic root of 1270821325 is about 1083.1655311432.

The spelling of 1270821325 in words is "one billion, two hundred seventy million, eight hundred twenty-one thousand, three hundred twenty-five".