125500010001 has 16 divisors (see below), whose sum is σ = 171432555840. Its totient is φ = 81634512960.

The previous prime is 125500009963. The next prime is 125500010011. The reversal of 125500010001 is 100010005521.

It is not a de Polignac number, because 125500010001 - 2⁶ = 125500009937 is a prime.

It is a super-2 number, since 2×125500010001² (a number of 23 digits) contains 22 as substring.

125500010001 is a modest number, since divided by 10001 gives 1255 as remainder.

It is not an unprimeable number, because it can be changed into a prime (125500010011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2151631 + ... + 2209188.

It is an arithmetic number, because the mean of its divisors is an integer number (10714534740).

Almost surely, 2^125500010001 is an apocalyptic number.

It is an amenable number.

125500010001 is a deficient number, since it is larger than the sum of its proper divisors (45932545839).

125500010001 is a wasteful number, since it uses less digits than its factorization.

125500010001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4361056.

The product of its (nonzero) digits is 50, while the sum is 15.

Adding to 125500010001 its reverse (100010005521), we get a palindrome (225510015522).

The spelling of 125500010001 in words is "one hundred twenty-five billion, five hundred million, ten thousand, one".