1252835879340 has 96 divisors (see below), whose sum is σ = 3543279344640. Its totient is φ = 330731140096.

The previous prime is 1252835879287. The next prime is 1252835879341. The reversal of 1252835879340 is 439785382521.

It is a Smith number, since the sum of its digits (57) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (1252835879341) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5495341 + ... + 5718779.

It is an arithmetic number, because the mean of its divisors is an integer number (36909159840).

Almost surely, 2^{1252835879340} is an apocalyptic number.

1252835879340 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 1252835879340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1771639672320).

1252835879340 is an abundant number, since it is smaller than the sum of its proper divisors (2290443465300).

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

1252835879340 is a wasteful number, since it uses less digits than its factorization.

1252835879340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 224391 (or 224389 counting only the distinct ones).

The product of its (nonzero) digits is 14515200, while the sum is 57.

The spelling of 1252835879340 in words is "one trillion, two hundred fifty-two billion, eight hundred thirty-five million, eight hundred seventy-nine thousand, three hundred forty".