125506507 has 8 divisors (see below), whose sum is σ = 148063232. Its totient is φ = 104106600.

The previous prime is 125506481. The next prime is 125506543. The reversal of 125506507 is 705605521.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 125506507 - 2¹¹ = 125504459 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125506547) 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 7 ways as a sum of consecutive naturals, for example, 288969 + ... + 289402.

It is an arithmetic number, because the mean of its divisors is an integer number (18507904).

Almost surely, 2^125506507 is an apocalyptic number.

125506507 is a deficient number, since it is larger than the sum of its proper divisors (22556725).

125506507 is an equidigital number, since it uses as much as digits as its factorization.

125506507 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 578409.

The product of its (nonzero) digits is 10500, while the sum is 31.

The square root of 125506507 is about 11202.9686690627. The cubic root of 125506507 is about 500.6744325391.

The spelling of 125506507 in words is "one hundred twenty-five million, five hundred six thousand, five hundred seven".