125123345 has 8 divisors (see below), whose sum is σ = 151635240. Its totient is φ = 99107200.

The previous prime is 125123329. The next prime is 125123351. The reversal of 125123345 is 543321521.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 61952641 + 63170704 = 7871^2 + 7948^2 .

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

It is not a de Polignac number, because 125123345 - 2⁴ = 125123329 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 123380 + ... + 124389.

It is an arithmetic number, because the mean of its divisors is an integer number (18954405).

Almost surely, 2^125123345 is an apocalyptic number.

It is an amenable number.

125123345 is a deficient number, since it is larger than the sum of its proper divisors (26511895).

125123345 is a wasteful number, since it uses less digits than its factorization.

125123345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 247875.

The product of its digits is 3600, while the sum is 26.

The square root of 125123345 is about 11185.8546834831. The cubic root of 125123345 is about 500.1644059355.

Adding to 125123345 its reverse (543321521), we get a palindrome (668444866).

The spelling of 125123345 in words is "one hundred twenty-five million, one hundred twenty-three thousand, three hundred forty-five".