1012143825 has 216 divisors, whose sum is σ = 2346349824. Its totient is φ = 408038400.

The previous prime is 1012143799. The next prime is 1012143829. The reversal of 1012143825 is 5283412101.

It is not a de Polignac number, because 1012143825 - 2¹⁰ = 1012142801 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1012143829) by changing a digit.

It is a polite number, since it can be written in 215 ways as a sum of consecutive naturals, for example, 8956969 + ... + 8957081.

Almost surely, 2^1012143825 is an apocalyptic number.

1012143825 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1012143825 is an abundant number, since it is smaller than the sum of its proper divisors (1334205999).

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

1012143825 is a wasteful number, since it uses less digits than its factorization.

1012143825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205 (or 186 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

The square root of 1012143825 is about 31814.2079109319. The cubic root of 1012143825 is about 1004.0316654960.

Adding to 1012143825 its reverse (5283412101), we get a palindrome (6295555926).

The spelling of 1012143825 in words is "one billion, twelve million, one hundred forty-three thousand, eight hundred twenty-five".