1025780893 has 4 divisors (see below), whose sum is σ = 1026119068. Its totient is φ = 1025442720.

The previous prime is 1025780879. The next prime is 1025780909. The reversal of 1025780893 is 3980875201.

1025780893 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 588887289 + 436893604 = 24267^2 + 20902^2 .

It is a cyclic number.

It is not a de Polignac number, because 1025780893 - 2¹³ = 1025772701 is a prime.

It is a super-3 number, since 3×1025780893³ (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1025780843) 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, 164496 + ... + 170617.

It is an arithmetic number, because the mean of its divisors is an integer number (256529767).

Almost surely, 2^1025780893 is an apocalyptic number.

It is an amenable number.

1025780893 is a deficient number, since it is larger than the sum of its proper divisors (338175).

1025780893 is an equidigital number, since it uses as much as digits as its factorization.

1025780893 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 338174.

The product of its (nonzero) digits is 120960, while the sum is 43.

The square root of 1025780893 is about 32027.8143650172. The cubic root of 1025780893 is about 1008.5208204034.

The spelling of 1025780893 in words is "one billion, twenty-five million, seven hundred eighty thousand, eight hundred ninety-three".