1125111725 has 12 divisors (see below), whose sum is σ = 1432846164. Its totient is φ = 875761920.

The previous prime is 1125111703. The next prime is 1125111739. The reversal of 1125111725 is 5271115211.

It can be written as a sum of positive squares in 6 ways, for example, as 649636 + 1124462089 = 806^2 + 33533^2 .

It is not a de Polignac number, because 1125111725 - 2¹⁴ = 1125095341 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1125111694 and 1125111703.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 607244 + ... + 609093.

It is an arithmetic number, because the mean of its divisors is an integer number (119403847).

Almost surely, 2^1125111725 is an apocalyptic number.

It is an amenable number.

1125111725 is a deficient number, since it is larger than the sum of its proper divisors (307734439).

1125111725 is a wasteful number, since it uses less digits than its factorization.

1125111725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1216384 (or 1216379 counting only the distinct ones).

The product of its digits is 700, while the sum is 26.

The square root of 1125111725 is about 33542.6851191135. The cubic root of 1125111725 is about 1040.0763396256.

Adding to 1125111725 its reverse (5271115211), we get a palindrome (6396226936).

The spelling of 1125111725 in words is "one billion, one hundred twenty-five million, one hundred eleven thousand, seven hundred twenty-five".