1057825557 has 6 divisors (see below), whose sum is σ = 1527970262. Its totient is φ = 705217032.

The previous prime is 1057825537. The next prime is 1057825603. The reversal of 1057825557 is 7555287501.

1057825557 is a `hidden beast` number, since 1 + 0 + 5 + 78 + 25 + 557 = 666.

1057825557 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 678394116 + 379431441 = 26046^2 + 19479^2 .

It is not a de Polignac number, because 1057825557 - 2⁷ = 1057825429 is a prime.

It is a super-2 number, since 2×1057825557² = 2237989818084720498, which contains 22 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 (1057825537) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 58768078 + ... + 58768095.

Almost surely, 2^1057825557 is an apocalyptic number.

It is an amenable number.

1057825557 is a deficient number, since it is larger than the sum of its proper divisors (470144705).

1057825557 is a wasteful number, since it uses less digits than its factorization.

1057825557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117536179 (or 117536176 counting only the distinct ones).

The product of its (nonzero) digits is 490000, while the sum is 45.

The square root of 1057825557 is about 32524.2303060349. The cubic root of 1057825557 is about 1018.9151470411.

The spelling of 1057825557 in words is "one billion, fifty-seven million, eight hundred twenty-five thousand, five hundred fifty-seven".