125249945 has 8 divisors (see below), whose sum is σ = 150360000. Its totient is φ = 100159920.

The previous prime is 125249933. The next prime is 125249953. The reversal of 125249945 is 549942521.

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

It is not a de Polignac number, because 125249945 - 2¹⁴ = 125233561 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, 22490 + ... + 27500.

It is an arithmetic number, because the mean of its divisors is an integer number (18795000).

Almost surely, 2^125249945 is an apocalyptic number.

It is an amenable number.

125249945 is a deficient number, since it is larger than the sum of its proper divisors (25110055).

125249945 is an equidigital number, since it uses as much as digits as its factorization.

125249945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10015.

The product of its digits is 129600, while the sum is 41.

The square root of 125249945 is about 11191.5121855806. The cubic root of 125249945 is about 500.3330381220. Note that the first 3 decimals are identical.

The spelling of 125249945 in words is "one hundred twenty-five million, two hundred forty-nine thousand, nine hundred forty-five".