125125440215 has 32 divisors (see below), whose sum is σ = 158931210240. Its totient is φ = 94305859200.

The previous prime is 125125440173. The next prime is 125125440217. The reversal of 125125440215 is 512044521521.

It is not a de Polignac number, because 125125440215 - 2¹⁰ = 125125439191 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125125440217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 42313517 + ... + 42316473.

It is an arithmetic number, because the mean of its divisors is an integer number (4966600320).

Almost surely, 2^125125440215 is an apocalyptic number.

125125440215 is a deficient number, since it is larger than the sum of its proper divisors (33805770025).

125125440215 is a wasteful number, since it uses less digits than its factorization.

125125440215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5303.

The product of its (nonzero) digits is 16000, while the sum is 32.

Adding to 125125440215 its reverse (512044521521), we get a palindrome (637169961736).

The spelling of 125125440215 in words is "one hundred twenty-five billion, one hundred twenty-five million, four hundred forty thousand, two hundred fifteen".