1025791872 has 96 divisors (see below), whose sum is σ = 3169676520. Its totient is φ = 293078016.

The previous prime is 1025791847. The next prime is 1025791913. The reversal of 1025791872 is 2781975201.

It is a tau number, because it is divible by the number of its divisors (96).

It is a super-2 number, since 2×1025791872² = 2104497929322528768, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8443 + ... + 46074.

Almost surely, 2^1025791872 is an apocalyptic number.

1025791872 is a gapful number since it is divisible by the number (12) 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 1025791872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1584838260).

1025791872 is an abundant number, since it is smaller than the sum of its proper divisors (2143884648).

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

1025791872 is an equidigital number, since it uses as much as digits as its factorization.

1025791872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54548 (or 54529 counting only the distinct ones).

The product of its (nonzero) digits is 70560, while the sum is 42.

The square root of 1025791872 is about 32027.9857624547. The cubic root of 1025791872 is about 1008.5244184786.

The spelling of 1025791872 in words is "one billion, twenty-five million, seven hundred ninety-one thousand, eight hundred seventy-two".