125206450 has 12 divisors (see below), whose sum is σ = 232884090. Its totient is φ = 50082560.

The previous prime is 125206387. The next prime is 125206453. The reversal of 125206450 is 54602521.

It can be written as a sum of positive squares in 3 ways, for example, as 63536841 + 61669609 = 7971^2 + 7853^2 .

It is a Harshad number since it is a multiple of its sum of digits (25).

It is not an unprimeable number, because it can be changed into a prime (125206453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1252015 + ... + 1252114.

Almost surely, 2^125206450 is an apocalyptic number.

125206450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

125206450 is a deficient number, since it is larger than the sum of its proper divisors (107677640).

125206450 is a wasteful number, since it uses less digits than its factorization.

125206450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2504141 (or 2504136 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 125206450 is about 11189.5688031309. The cubic root of 125206450 is about 500.2751152621.

Adding to 125206450 its reverse (54602521), we get a palindrome (179808971).

The spelling of 125206450 in words is "one hundred twenty-five million, two hundred six thousand, four hundred fifty".