1005250872 has 16 divisors (see below), whose sum is σ = 2513127240. Its totient is φ = 335083616.

The previous prime is 1005250837. The next prime is 1005250877. The reversal of 1005250872 is 2780525001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1005250877) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20942703 + ... + 20942750.

Almost surely, 2^1005250872 is an apocalyptic number.

1005250872 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1005250872 is an abundant number, since it is smaller than the sum of its proper divisors (1507876368).

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

1005250872 is a wasteful number, since it uses less digits than its factorization.

1005250872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41885462 (or 41885458 counting only the distinct ones).

The product of its (nonzero) digits is 5600, while the sum is 30.

The square root of 1005250872 is about 31705.6914764526. The cubic root of 1005250872 is about 1001.7472360548.

Adding to 1005250872 its reverse (2780525001), we get a palindrome (3785775873).

The spelling of 1005250872 in words is "one billion, five million, two hundred fifty thousand, eight hundred seventy-two".