125105603145 has 32 divisors (see below), whose sum is σ = 201686889600. Its totient is φ = 66217290240.

The previous prime is 125105603141. The next prime is 125105603149. The reversal of 125105603145 is 541306501521.

It is an interprime number because it is at equal distance from previous prime (125105603141) and next prime (125105603149).

It is not a de Polignac number, because 125105603145 - 2² = 125105603141 is a prime.

It is not an unprimeable number, because it can be changed into a prime (125105603141) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10291531 + ... + 10303679.

It is an arithmetic number, because the mean of its divisors is an integer number (6302715300).

Almost surely, 2^125105603145 is an apocalyptic number.

125105603145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

125105603145 is a deficient number, since it is larger than the sum of its proper divisors (76581286455).

125105603145 is a wasteful number, since it uses less digits than its factorization.

125105603145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17305.

The product of its (nonzero) digits is 18000, while the sum is 33.

The spelling of 125105603145 in words is "one hundred twenty-five billion, one hundred five million, six hundred three thousand, one hundred forty-five".