1025231988 has 48 divisors (see below), whose sum is σ = 2763198144. Its totient is φ = 292400640.

The previous prime is 1025231981. The next prime is 1025232067. The reversal of 1025231988 is 8891325201.

It is a super-2 number, since 2×1025231988² = 2102201258436864288, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1025231981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 226195 + ... + 230682.

It is an arithmetic number, because the mean of its divisors is an integer number (57566628).

Almost surely, 2^1025231988 is an apocalyptic number.

It is an amenable number.

1025231988 is an abundant number, since it is smaller than the sum of its proper divisors (1737966156).

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

1025231988 is a wasteful number, since it uses less digits than its factorization.

1025231988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 456912 (or 456910 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 39.

The square root of 1025231988 is about 32019.2440260541. The cubic root of 1025231988 is about 1008.3408986493.

The spelling of 1025231988 in words is "one billion, twenty-five million, two hundred thirty-one thousand, nine hundred eighty-eight".