125506506 has 16 divisors (see below), whose sum is σ = 253360224. Its totient is φ = 41444304.

The previous prime is 125506481. The next prime is 125506543. The reversal of 125506506 is 605605521.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 97105 + ... + 98388.

It is an arithmetic number, because the mean of its divisors is an integer number (15835014).

Almost surely, 2^125506506 is an apocalyptic number.

125506506 is an abundant number, since it is smaller than the sum of its proper divisors (127853718).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

125506506 is a wasteful number, since it uses less digits than its factorization.

125506506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195605.

The product of its (nonzero) digits is 9000, while the sum is 30.

The square root of 125506506 is about 11202.9686244317. The cubic root of 125506506 is about 500.6744312094.

The spelling of 125506506 in words is "one hundred twenty-five million, five hundred six thousand, five hundred six".