1277525264 has 10 divisors (see below), whose sum is σ = 2475205230. Its totient is φ = 638762624.

The previous prime is 1277525239. The next prime is 1277525267. The reversal of 1277525264 is 4625257721.

It can be written as a sum of positive squares in only one way, i.e., 670395664 + 607129600 = 25892^2 + 24640^2 .

It is not an unprimeable number, because it can be changed into a prime (1277525267) 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 as a sum of consecutive naturals, namely, 39922649 + ... + 39922680.

It is an arithmetic number, because the mean of its divisors is an integer number (247520523).

Almost surely, 2^1277525264 is an apocalyptic number.

It is an amenable number.

1277525264 is a deficient number, since it is larger than the sum of its proper divisors (1197679966).

1277525264 is an equidigital number, since it uses as much as digits as its factorization.

1277525264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79845337 (or 79845331 counting only the distinct ones).

The product of its digits is 235200, while the sum is 41.

The square root of 1277525264 is about 35742.4854200152. The cubic root of 1277525264 is about 1085.0668590540.

The spelling of 1277525264 in words is "one billion, two hundred seventy-seven million, five hundred twenty-five thousand, two hundred sixty-four".