125125025 has 6 divisors (see below), whose sum is σ = 155155062. Its totient is φ = 100100000.

The previous prime is 125125001. The next prime is 125125027. The reversal of 125125025 is 520521521.

It can be written as a sum of positive squares in 3 ways, for example, as 65536 + 125059489 = 256^2 + 11183^2 .

It is not a de Polignac number, because 125125025 - 2¹⁰ = 125124001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125125027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2502476 + ... + 2502525.

It is an arithmetic number, because the mean of its divisors is an integer number (25859177).

Almost surely, 2^125125025 is an apocalyptic number.

It is an amenable number.

125125025 is a deficient number, since it is larger than the sum of its proper divisors (30030037).

125125025 is an equidigital number, since it uses as much as digits as its factorization.

125125025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5005011 (or 5005006 counting only the distinct ones).

The product of its (nonzero) digits is 1000, while the sum is 23.

The square root of 125125025 is about 11185.9297780739. The cubic root of 125125025 is about 500.1666444531.

Adding to 125125025 its reverse (520521521), we get a palindrome (645646546).

The spelling of 125125025 in words is "one hundred twenty-five million, one hundred twenty-five thousand, twenty-five".