1281570125 has 16 divisors (see below), whose sum is σ = 1744801344. Its totient is φ = 932050000.

The previous prime is 1281570091. The next prime is 1281570179. The reversal of 1281570125 is 5210751821.

It is not a de Polignac number, because 1281570125 - 2⁶ = 1281570061 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1281570091 and 1281570100.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 464651 + ... + 467400.

It is an arithmetic number, because the mean of its divisors is an integer number (109050084).

Almost surely, 2^1281570125 is an apocalyptic number.

It is an amenable number.

1281570125 is a deficient number, since it is larger than the sum of its proper divisors (463231219).

1281570125 is an equidigital number, since it uses as much as digits as its factorization.

1281570125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 932077 (or 932067 counting only the distinct ones).

The product of its (nonzero) digits is 5600, while the sum is 32.

The square root of 1281570125 is about 35799.0240788768. The cubic root of 1281570125 is about 1086.2108209590.

The spelling of 1281570125 in words is "one billion, two hundred eighty-one million, five hundred seventy thousand, one hundred twenty-five".