125840223215 has 16 divisors (see below), whose sum is σ = 172589859840. Its totient is φ = 86285947680.

The previous prime is 125840223211. The next prime is 125840223239. The reversal of 125840223215 is 512322048521.

It is not a de Polignac number, because 125840223215 - 2² = 125840223211 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125840223211) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 678170 + ... + 843560.

It is an arithmetic number, because the mean of its divisors is an integer number (10786866240).

Almost surely, 2^125840223215 is an apocalyptic number.

125840223215 is a deficient number, since it is larger than the sum of its proper divisors (46749636625).

125840223215 is a wasteful number, since it uses less digits than its factorization.

125840223215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187142.

The product of its (nonzero) digits is 38400, while the sum is 35.

The spelling of 125840223215 in words is "one hundred twenty-five billion, eight hundred forty million, two hundred twenty-three thousand, two hundred fifteen".