1275277525140 has 96 divisors (see below), whose sum is σ = 3598627342464. Its totient is φ = 337422458880.

The previous prime is 1275277525133. The next prime is 1275277525169. The reversal of 1275277525140 is 415257725721.

It is a super-2 number, since 2×1275277525140² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1275277525140.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 73380132 + ... + 73397508.

It is an arithmetic number, because the mean of its divisors is an integer number (37485701484).

Almost surely, 2^{1275277525140} is an apocalyptic number.

1275277525140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1275277525140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1799313671232).

1275277525140 is an abundant number, since it is smaller than the sum of its proper divisors (2323349817324).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1275277525140 is a wasteful number, since it uses less digits than its factorization.

1275277525140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26857 (or 26855 counting only the distinct ones).

The product of its (nonzero) digits is 1372000, while the sum is 48.

The spelling of 1275277525140 in words is "one trillion, two hundred seventy-five billion, two hundred seventy-seven million, five hundred twenty-five thousand, one hundred forty".