1125423951 has 8 divisors (see below), whose sum is σ = 1502865840. Its totient is φ = 749132352.

The previous prime is 1125423917. The next prime is 1125423961. The reversal of 1125423951 is 1593245211.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1125423951 - 2¹⁰ = 1125422927 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1125423961) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 285286 + ... + 289203.

It is an arithmetic number, because the mean of its divisors is an integer number (187858230).

Almost surely, 2^1125423951 is an apocalyptic number.

1125423951 is a deficient number, since it is larger than the sum of its proper divisors (377441889).

1125423951 is an equidigital number, since it uses as much as digits as its factorization.

1125423951 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 575145.

The product of its digits is 10800, while the sum is 33.

The square root of 1125423951 is about 33547.3389555714. The cubic root of 1125423951 is about 1040.1725400987.

The spelling of 1125423951 in words is "one billion, one hundred twenty-five million, four hundred twenty-three thousand, nine hundred fifty-one".