1252278500 has 96 divisors (see below), whose sum is σ = 3025451520. Its totient is φ = 448992000.

The previous prime is 1252278499. The next prime is 1252278523. The reversal of 1252278500 is 58722521.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 399941 + ... + 403059.

It is an arithmetic number, because the mean of its divisors is an integer number (31515120).

Almost surely, 2^1252278500 is an apocalyptic number.

1252278500 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 1252278500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1512725760).

1252278500 is an abundant number, since it is smaller than the sum of its proper divisors (1773173020).

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

1252278500 is a wasteful number, since it uses less digits than its factorization.

1252278500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3222 (or 3210 counting only the distinct ones).

The product of its (nonzero) digits is 11200, while the sum is 32.

The square root of 1252278500 is about 35387.5472447583. The cubic root of 1252278500 is about 1077.8714649923.

The spelling of 1252278500 in words is "one billion, two hundred fifty-two million, two hundred seventy-eight thousand, five hundred".