125530507 has 2 divisors, whose sum is σ = 125530508. Its totient is φ = 125530506.

The previous prime is 125530487. The next prime is 125530547. The reversal of 125530507 is 705035521.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-125530507 is a prime.

It is a super-3 number, since 3×125530507³ (a number of 25 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (125530547) 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 as a sum of consecutive naturals, namely, 62765253 + 62765254.

It is an arithmetic number, because the mean of its divisors is an integer number (62765254).

Almost surely, 2^125530507 is an apocalyptic number.

125530507 is a deficient number, since it is larger than the sum of its proper divisors (1).

125530507 is an equidigital number, since it uses as much as digits as its factorization.

125530507 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5250, while the sum is 28.

The square root of 125530507 is about 11204.0397625142. The cubic root of 125530507 is about 500.7063443521.

The spelling of 125530507 in words is "one hundred twenty-five million, five hundred thirty thousand, five hundred seven".