1125713557 has 2 divisors, whose sum is σ = 1125713558. Its totient is φ = 1125713556.

The previous prime is 1125713551. The next prime is 1125713593. The reversal of 1125713557 is 7553175211.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1059762916 + 65950641 = 32554^2 + 8121^2 .

It is a cyclic number.

It is not a de Polignac number, because 1125713557 - 2¹⁹ = 1125189269 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1125713551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 562856778 + 562856779.

It is an arithmetic number, because the mean of its divisors is an integer number (562856779).

Almost surely, 2^1125713557 is an apocalyptic number.

It is an amenable number.

1125713557 is a deficient number, since it is larger than the sum of its proper divisors (1).

1125713557 is an equidigital number, since it uses as much as digits as its factorization.

1125713557 is an evil number, because the sum of its binary digits is even.

The product of its digits is 36750, while the sum is 37.

The square root of 1125713557 is about 33551.6550560475. The cubic root of 1125713557 is about 1040.2617551815.

Adding to 1125713557 its reverse (7553175211), we get a palindrome (8678888768).

The spelling of 1125713557 in words is "one billion, one hundred twenty-five million, seven hundred thirteen thousand, five hundred fifty-seven".