1252042500 has 120 divisors (see below), whose sum is σ = 3679947040. Its totient is φ = 331200000.

The previous prime is 1252042489. The next prime is 1252042553. The reversal of 1252042500 is 52402521.

It is a happy number.

It is a super-2 number, since 2×1252042500² = 3135220843612500000, which contains 22 as substring.

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 39 ways as a sum of consecutive naturals, for example, 1041900 + ... + 1043100.

Almost surely, 2^1252042500 is an apocalyptic number.

1252042500 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 1252042500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1839973520).

1252042500 is an abundant number, since it is smaller than the sum of its proper divisors (2427904540).

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

1252042500 is a wasteful number, since it uses less digits than its factorization.

1252042500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1367 (or 1350 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 1252042500 is about 35384.2125813194. The cubic root of 1252042500 is about 1077.8037501171.

The spelling of 1252042500 in words is "one billion, two hundred fifty-two million, forty-two thousand, five hundred".