125105021204 has 24 divisors (see below), whose sum is σ = 228575063808. Its totient is φ = 59800774880.

The previous prime is 125105021203. The next prime is 125105021243. The reversal of 125105021204 is 402120501521.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a self number, because there is not a number n which added to its sum of digits gives 125105021204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125105021203) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 191267 + ... + 535530.

It is an arithmetic number, because the mean of its divisors is an integer number (9523960992).

Almost surely, 2^125105021204 is an apocalyptic number.

It is an amenable number.

125105021204 is a deficient number, since it is larger than the sum of its proper divisors (103470042604).

125105021204 is a wasteful number, since it uses less digits than its factorization.

125105021204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 728695 (or 728693 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 23.

Adding to 125105021204 its reverse (402120501521), we get a palindrome (527225522725).

The spelling of 125105021204 in words is "one hundred twenty-five billion, one hundred five million, twenty-one thousand, two hundred four".