1025839057 has 4 divisors (see below), whose sum is σ = 1025983216. Its totient is φ = 1025694900.

The previous prime is 1025839021. The next prime is 1025839063. The reversal of 1025839057 is 7509385201.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1025839057 - 2¹¹ = 1025837009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1025839357) 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, 60819 + ... + 75832.

It is an arithmetic number, because the mean of its divisors is an integer number (256495804).

Almost surely, 2^1025839057 is an apocalyptic number.

It is an amenable number.

1025839057 is a deficient number, since it is larger than the sum of its proper divisors (144159).

1025839057 is an equidigital number, since it uses as much as digits as its factorization.

1025839057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144158.

The product of its (nonzero) digits is 75600, while the sum is 40.

The square root of 1025839057 is about 32028.7223753930. The cubic root of 1025839057 is about 1008.5398818152.

The spelling of 1025839057 in words is "one billion, twenty-five million, eight hundred thirty-nine thousand, fifty-seven".