1252979258280 has 128 divisors (see below), whose sum is σ = 3899391840000. Its totient is φ = 321707208704.

The previous prime is 1252979258227. The next prime is 1252979258303. The reversal of 1252979258280 is 828529792521.

It is a Harshad number since it is a multiple of its sum of digits (60).

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, 747856 + ... + 1750784.

It is an arithmetic number, because the mean of its divisors is an integer number (30463998750).

Almost surely, 2^{1252979258280} is an apocalyptic number.

1252979258280 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 1252979258280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1949695920000).

1252979258280 is an abundant number, since it is smaller than the sum of its proper divisors (2646412581720).

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

1252979258280 is a wasteful number, since it uses less digits than its factorization.

1252979258280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1003331 (or 1003327 counting only the distinct ones).

The product of its (nonzero) digits is 14515200, while the sum is 60.

The spelling of 1252979258280 in words is "one trillion, two hundred fifty-two billion, nine hundred seventy-nine million, two hundred fifty-eight thousand, two hundred eighty".