1252528889140 has 12 divisors (see below), whose sum is σ = 2630310667236. Its totient is φ = 501011555648.

The previous prime is 1252528889137. The next prime is 1252528889207. The reversal of 1252528889140 is 419888252521.

It can be written as a sum of positive squares in 2 ways, for example, as 757129697424 + 495399191716 = 870132^2 + 703846^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31313222209 + ... + 31313222248.

It is an arithmetic number, because the mean of its divisors is an integer number (219192555603).

Almost surely, 2^{1252528889140} is an apocalyptic number.

1252528889140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1252528889140 is an abundant number, since it is smaller than the sum of its proper divisors (1377781778096).

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

1252528889140 is a wasteful number, since it uses less digits than its factorization.

1252528889140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62626444466 (or 62626444464 counting only the distinct ones).

The product of its (nonzero) digits is 3686400, while the sum is 55.

The spelling of 1252528889140 in words is "one trillion, two hundred fifty-two billion, five hundred twenty-eight million, eight hundred eighty-nine thousand, one hundred forty".