1125125626 has 4 divisors (see below), whose sum is σ = 1687688442. Its totient is φ = 562562812.

The previous prime is 1125125597. The next prime is 1125125627. The reversal of 1125125626 is 6265215211.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6265215211 = 19 ⋅329748169.

It can be written as a sum of positive squares in only one way, i.e., 673350601 + 451775025 = 25949^2 + 21255^2 .

It is not an unprimeable number, because it can be changed into a prime (1125125627) by changing a digit.

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 as a sum of consecutive naturals, namely, 281281405 + ... + 281281408.

Almost surely, 2^1125125626 is an apocalyptic number.

1125125626 is a deficient number, since it is larger than the sum of its proper divisors (562562816).

1125125626 is an equidigital number, since it uses as much as digits as its factorization.

1125125626 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 562562815.

The product of its digits is 7200, while the sum is 31.

The square root of 1125125626 is about 33542.8923320575. The cubic root of 1125125626 is about 1040.0806230644.

The spelling of 1125125626 in words is "one billion, one hundred twenty-five million, one hundred twenty-five thousand, six hundred twenty-six".