1252711543400 has 96 divisors (see below), whose sum is σ = 2947343500800. Its totient is φ = 495107289600.

The previous prime is 1252711543337. The next prime is 1252711543429. The reversal of 1252711543400 is 43451172521.

It is a super-2 number, since 2×1252711543400² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 26159879 + ... + 26207721.

It is an arithmetic number, because the mean of its divisors is an integer number (30701494800).

Almost surely, 2^{1252711543400} is an apocalyptic number.

1252711543400 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 1252711543400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1473671750400).

1252711543400 is an abundant number, since it is smaller than the sum of its proper divisors (1694631957400).

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

1252711543400 is a wasteful number, since it uses less digits than its factorization.

1252711543400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49419 (or 49410 counting only the distinct ones).

The product of its (nonzero) digits is 33600, while the sum is 35.

The spelling of 1252711543400 in words is "one trillion, two hundred fifty-two billion, seven hundred eleven million, five hundred forty-three thousand, four hundred".