1275288651 has 48 divisors (see below), whose sum is σ = 2366868000. Its totient is φ = 672670656.

The previous prime is 1275288649. The next prime is 1275288689. The reversal of 1275288651 is 1568825721.

It is not a de Polignac number, because 1275288651 - 2¹ = 1275288649 is a prime.

It is a super-2 number, since 2×1275288651² = 3252722286738799602, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1275288597 and 1275288606.

It is not an unprimeable number, because it can be changed into a prime (1275283651) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 19876 + ... + 54273.

It is an arithmetic number, because the mean of its divisors is an integer number (49309750).

Almost surely, 2^1275288651 is an apocalyptic number.

1275288651 is a deficient number, since it is larger than the sum of its proper divisors (1091579349).

1275288651 is a wasteful number, since it uses less digits than its factorization.

1275288651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74185 (or 74172 counting only the distinct ones).

The product of its digits is 268800, while the sum is 45.

The square root of 1275288651 is about 35711.1838364398. The cubic root of 1275288651 is about 1084.4332662881.

The spelling of 1275288651 in words is "one billion, two hundred seventy-five million, two hundred eighty-eight thousand, six hundred fifty-one".