125633945 has 16 divisors (see below), whose sum is σ = 157410000. Its totient is φ = 96139008.

The previous prime is 125633939. The next prime is 125633971. The reversal of 125633945 is 549336521.

It can be written as a sum of positive squares in 8 ways, for example, as 126736 + 125507209 = 356^2 + 11203^2 .

It is a cyclic number.

It is not a de Polignac number, because 125633945 - 2¹² = 125629849 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 125633899 and 125633908.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11831 + ... + 19779.

It is an arithmetic number, because the mean of its divisors is an integer number (9838125).

Almost surely, 2^125633945 is an apocalyptic number.

It is an amenable number.

125633945 is a deficient number, since it is larger than the sum of its proper divisors (31776055).

125633945 is a wasteful number, since it uses less digits than its factorization.

125633945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8092.

The product of its digits is 97200, while the sum is 38.

The square root of 125633945 is about 11208.6549148415. The cubic root of 125633945 is about 500.8438350836.

The spelling of 125633945 in words is "one hundred twenty-five million, six hundred thirty-three thousand, nine hundred forty-five".