125998945 has 16 divisors (see below), whose sum is σ = 161626752. Its totient is φ = 94061440.

The previous prime is 125998931. The next prime is 125998981. The reversal of 125998945 is 549899521.

It is not a de Polignac number, because 125998945 - 2¹⁷ = 125867873 is a prime.

It is a super-2 number, since 2×125998945² = 31751468282226050, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 125998892 and 125998901.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8647 + ... + 18076.

It is an arithmetic number, because the mean of its divisors is an integer number (10101672).

Almost surely, 2^125998945 is an apocalyptic number.

It is an amenable number.

125998945 is a deficient number, since it is larger than the sum of its proper divisors (35627807).

125998945 is a wasteful number, since it uses less digits than its factorization.

125998945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26792.

The product of its digits is 1166400, while the sum is 52.

The square root of 125998945 is about 11224.9251667884. The cubic root of 125998945 is about 501.3283942784.

The spelling of 125998945 in words is "one hundred twenty-five million, nine hundred ninety-eight thousand, nine hundred forty-five".