1252919250 has 384 divisors, whose sum is σ = 4037050368. Its totient is φ = 277200000.

The previous prime is 1252919233. The next prime is 1252919257. The reversal of 1252919250 is 529192521.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1252919257) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 17646715 + ... + 17646785.

It is an arithmetic number, because the mean of its divisors is an integer number (10513152).

Almost surely, 2^1252919250 is an apocalyptic number.

1252919250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1252919250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2018525184).

1252919250 is an abundant number, since it is smaller than the sum of its proper divisors (2784131118).

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

1252919250 is a wasteful number, since it uses less digits than its factorization.

1252919250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159 (or 146 counting only the distinct ones).

The product of its (nonzero) digits is 16200, while the sum is 36.

The square root of 1252919250 is about 35396.5994129380. The cubic root of 1252919250 is about 1078.0552708526.

The spelling of 1252919250 in words is "one billion, two hundred fifty-two million, nine hundred nineteen thousand, two hundred fifty".