125205150155 has 64 divisors (see below), whose sum is σ = 164776550400. Its totient is φ = 91018661760.

The previous prime is 125205150137. The next prime is 125205150167. The reversal of 125205150155 is 551051502521.

It is a de Polignac number, because none of the positive numbers 2^k-125205150155 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 48546656 + ... + 48549234.

It is an arithmetic number, because the mean of its divisors is an integer number (2574633600).

Almost surely, 2^125205150155 is an apocalyptic number.

125205150155 is a deficient number, since it is larger than the sum of its proper divisors (39571400245).

125205150155 is a wasteful number, since it uses less digits than its factorization.

125205150155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2864.

The product of its (nonzero) digits is 12500, while the sum is 32.

Adding to 125205150155 its reverse (551051502521), we get a palindrome (676256652676).

The spelling of 125205150155 in words is "one hundred twenty-five billion, two hundred five million, one hundred fifty thousand, one hundred fifty-five".