1125725047 has 4 divisors (see below), whose sum is σ = 1125802816. Its totient is φ = 1125647280.

The previous prime is 1125725039. The next prime is 1125725063. The reversal of 1125725047 is 7405275211.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 7405275211 = 16267 ⋅455233.

It is a cyclic number.

It is not a de Polignac number, because 1125725047 - 2³ = 1125725039 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1125725017) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10038 + ... + 48499.

It is an arithmetic number, because the mean of its divisors is an integer number (281450704).

Almost surely, 2^1125725047 is an apocalyptic number.

1125725047 is a deficient number, since it is larger than the sum of its proper divisors (77769).

1125725047 is an equidigital number, since it uses as much as digits as its factorization.

1125725047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77768.

The product of its (nonzero) digits is 19600, while the sum is 34.

The square root of 1125725047 is about 33551.8262841235. The cubic root of 1125725047 is about 1040.2652944379.

The spelling of 1125725047 in words is "one billion, one hundred twenty-five million, seven hundred twenty-five thousand, forty-seven".