1252889001258 has 64 divisors (see below), whose sum is σ = 2670418882560. Its totient is φ = 390756115008.

The previous prime is 1252889001257. The next prime is 1252889001269. The reversal of 1252889001258 is 8521009882521.

It is a self number, because there is not a number n which added to its sum of digits gives 1252889001258.

It is not an unprimeable number, because it can be changed into a prime (1252889001253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4236735 + ... + 4522797.

It is an arithmetic number, because the mean of its divisors is an integer number (41725295040).

Almost surely, 2^{1252889001258} is an apocalyptic number.

1252889001258 is an abundant number, since it is smaller than the sum of its proper divisors (1417529881302).

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

1252889001258 is a wasteful number, since it uses less digits than its factorization.

1252889001258 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 286563.

The product of its (nonzero) digits is 921600, while the sum is 51.

The spelling of 1252889001258 in words is "one trillion, two hundred fifty-two billion, eight hundred eighty-nine million, one thousand, two hundred fifty-eight".