1275588641 has 4 divisors (see below), whose sum is σ = 1293062532. Its totient is φ = 1258114752.

The previous prime is 1275588637. The next prime is 1275588647. The reversal of 1275588641 is 1468855721.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1468855721 = 3323 ⋅442027.

It can be written as a sum of positive squares in 2 ways, for example, as 660747025 + 614841616 = 25705^2 + 24796^2 .

It is a cyclic number.

It is not a de Polignac number, because 1275588641 - 2² = 1275588637 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1275588647) 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, 8736836 + ... + 8736981.

It is an arithmetic number, because the mean of its divisors is an integer number (323265633).

Almost surely, 2^1275588641 is an apocalyptic number.

It is an amenable number.

1275588641 is a deficient number, since it is larger than the sum of its proper divisors (17473891).

1275588641 is an equidigital number, since it uses as much as digits as its factorization.

1275588641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17473890.

The product of its digits is 537600, while the sum is 47.

The square root of 1275588641 is about 35715.3838142613. The cubic root of 1275588641 is about 1084.5182911254.

The spelling of 1275588641 in words is "one billion, two hundred seventy-five million, five hundred eighty-eight thousand, six hundred forty-one".