1125857 has 2 divisors, whose sum is σ = 1125858. Its totient is φ = 1125856.

The previous prime is 1125833. The next prime is 1125871. The reversal of 1125857 is 7585211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 829921 + 295936 = 911^2 + 544^2 .

It is a cyclic number.

It is not a de Polignac number, because 1125857 - 2⁶ = 1125793 is a prime.

It is an Ulam number.

It is equal to p₈₇₅₈₁ and since 1125857 and 87581 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (1125557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 562928 + 562929.

It is an arithmetic number, because the mean of its divisors is an integer number (562929).

2^1125857 is an apocalyptic number.

It is an amenable number.

1125857 is a deficient number, since it is larger than the sum of its proper divisors (1).

1125857 is an equidigital number, since it uses as much as digits as its factorization.

1125857 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2800, while the sum is 29.

The square root of 1125857 is about 1061.0640885451. The cubic root of 1125857 is about 104.0305938099.

The spelling of 1125857 in words is "one million, one hundred twenty-five thousand, eight hundred fifty-seven".