125016666265 has 8 divisors (see below), whose sum is σ = 158844705480. Its totient is φ = 94130195712.

The previous prime is 125016666263. The next prime is 125016666277. The reversal of 125016666265 is 562666610521.

It can be written as a sum of positive squares in 4 ways, for example, as 28611384201 + 96405282064 = 169149^2 + 310492^2 .

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

It is not a de Polignac number, because 125016666265 - 2¹ = 125016666263 is a prime.

It is not an unprimeable number, because it can be changed into a prime (125016666263) 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 7 ways as a sum of consecutive naturals, for example, 735392070 + ... + 735392239.

It is an arithmetic number, because the mean of its divisors is an integer number (19855588185).

Almost surely, 2^125016666265 is an apocalyptic number.

It is an amenable number.

125016666265 is a deficient number, since it is larger than the sum of its proper divisors (33828039215).

125016666265 is a wasteful number, since it uses less digits than its factorization.

125016666265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1470784331.

The product of its (nonzero) digits is 777600, while the sum is 46.

It can be divided in two parts, 12501 and 6666265, that added together give a palindrome (6678766).

The spelling of 125016666265 in words is "one hundred twenty-five billion, sixteen million, six hundred sixty-six thousand, two hundred sixty-five".