1275277525138 has 8 divisors (see below), whose sum is σ = 1926879180732. Its totient is φ = 632984464896.

The previous prime is 1275277525133. The next prime is 1275277525169. The reversal of 1275277525138 is 8315257725721.

It can be written as a sum of positive squares in 2 ways, for example, as 1252534773889 + 22742751249 = 1119167^2 + 150807^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×1275277525138² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1275277525133) 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, 2327148495 + ... + 2327149042.

Almost surely, 2^{1275277525138} is an apocalyptic number.

1275277525138 is a deficient number, since it is larger than the sum of its proper divisors (651601655594).

1275277525138 is a wasteful number, since it uses less digits than its factorization.

1275277525138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4654297676.

The product of its digits is 8232000, while the sum is 55.

The spelling of 1275277525138 in words is "one trillion, two hundred seventy-five billion, two hundred seventy-seven million, five hundred twenty-five thousand, one hundred thirty-eight".