1012155250 has 64 divisors (see below), whose sum is σ = 1997498880. Its totient is φ = 383275200.

The previous prime is 1012155247. The next prime is 1012155307. The reversal of 1012155250 is 525512101.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 591396 + ... + 593104.

It is an arithmetic number, because the mean of its divisors is an integer number (31210920).

Almost surely, 2^1012155250 is an apocalyptic number.

1012155250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1012155250 is a deficient number, since it is larger than the sum of its proper divisors (985343630).

1012155250 is a wasteful number, since it uses less digits than its factorization.

1012155250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1852 (or 1842 counting only the distinct ones).

The product of its (nonzero) digits is 500, while the sum is 22.

The square root of 1012155250 is about 31814.3874685652. The cubic root of 1012155250 is about 1004.0354432920.

Adding to 1012155250 its reverse (525512101), we get a palindrome (1537667351).

The spelling of 1012155250 in words is "one billion, twelve million, one hundred fifty-five thousand, two hundred fifty".