1252889000 has 64 divisors (see below), whose sum is σ = 3198312000. Its totient is φ = 455592000.

The previous prime is 1252888961. The next prime is 1252889003. The reversal of 1252889000 is 9882521.

It is not an unprimeable number, because it can be changed into a prime (1252889003) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45950 + ... + 67949.

It is an arithmetic number, because the mean of its divisors is an integer number (49973625).

Almost surely, 2^1252889000 is an apocalyptic number.

1252889000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1252889000 is an abundant number, since it is smaller than the sum of its proper divisors (1945423000).

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

1252889000 is a wasteful number, since it uses less digits than its factorization.

1252889000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113931 (or 113917 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 35.

The square root of 1252889000 is about 35396.1721094245. The cubic root of 1252889000 is about 1078.0465947323.

The spelling of 1252889000 in words is "one billion, two hundred fifty-two million, eight hundred eighty-nine thousand".