125221052 has 36 divisors (see below), whose sum is σ = 245176008. Its totient is φ = 55497600.

The previous prime is 125221051. The next prime is 125221073. The reversal of 125221052 is 250122521.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125221051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 73118 + ... + 74810.

Almost surely, 2^125221052 is an apocalyptic number.

It is an amenable number.

125221052 is a deficient number, since it is larger than the sum of its proper divisors (119954956).

125221052 is a wasteful number, since it uses less digits than its factorization.

125221052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1790 (or 1747 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 20.

The square root of 125221052 is about 11190.2212668025. The cubic root of 125221052 is about 500.2945624319.

Adding to 125221052 its reverse (250122521), we get a palindrome (375343573).

The spelling of 125221052 in words is "one hundred twenty-five million, two hundred twenty-one thousand, fifty-two".