1125125625 has 80 divisors (see below), whose sum is σ = 2085332480. Its totient is φ = 535680000.

The previous prime is 1125125597. The next prime is 1125125627. The reversal of 1125125625 is 5265215211.

It is not a de Polignac number, because 1125125625 - 2⁷ = 1125125497 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1125125592 and 1125125601.

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 in 79 ways as a sum of consecutive naturals, for example, 754881 + ... + 756369.

It is an arithmetic number, because the mean of its divisors is an integer number (26066656).

Almost surely, 2^1125125625 is an apocalyptic number.

1125125625 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1125125625 is a deficient number, since it is larger than the sum of its proper divisors (960206855).

1125125625 is a wasteful number, since it uses less digits than its factorization.

1125125625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1556 (or 1541 counting only the distinct ones).

The product of its digits is 6000, while the sum is 30.

The square root of 1125125625 is about 33542.8923171512. The cubic root of 1125125625 is about 1040.0806227562.

It can be divided in two parts, 1125125 and 625, that added together give a triangular number (1125750 = T₁₅₀₀).

The spelling of 1125125625 in words is "one billion, one hundred twenty-five million, one hundred twenty-five thousand, six hundred twenty-five".