1057558725 has 18 divisors (see below), whose sum is σ = 1894205586. Its totient is φ = 564031200.

The previous prime is 1057558687. The next prime is 1057558771. The reversal of 1057558725 is 5278557501.

1057558725 is a `hidden beast` number, since 1 + 0 + 575 + 5 + 8 + 72 + 5 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 19236996 + 1038321729 = 4386^2 + 32223^2 .

It is not a de Polignac number, because 1057558725 - 2⁷ = 1057558597 is a prime.

It is a super-2 number, since 2×1057558725² = 2236860913647251250, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

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 17 ways as a sum of consecutive naturals, for example, 2349906 + ... + 2350355.

Almost surely, 2^1057558725 is an apocalyptic number.

1057558725 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1057558725 is a deficient number, since it is larger than the sum of its proper divisors (836646861).

1057558725 is a wasteful number, since it uses less digits than its factorization.

1057558725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4700277 (or 4700269 counting only the distinct ones).

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

The square root of 1057558725 is about 32520.1279979031. The cubic root of 1057558725 is about 1018.8294674984.

The spelling of 1057558725 in words is "one billion, fifty-seven million, five hundred fifty-eight thousand, seven hundred twenty-five".