10001020125 has 16 divisors (see below), whose sum is σ = 16641698112. Its totient is φ = 5333877200.

The previous prime is 10001020123. The next prime is 10001020181. The reversal of 10001020125 is 52102010001.

It is not a de Polignac number, because 10001020125 - 2¹ = 10001020123 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 10001020125.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10001020123) 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, 13334319 + ... + 13335068.

It is an arithmetic number, because the mean of its divisors is an integer number (1040106132).

Almost surely, 2^10001020125 is an apocalyptic number.

10001020125 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

10001020125 is a deficient number, since it is larger than the sum of its proper divisors (6640677987).

10001020125 is an equidigital number, since it uses as much as digits as its factorization.

10001020125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26669405 (or 26669395 counting only the distinct ones).

The product of its (nonzero) digits is 20, while the sum is 12.

Adding to 10001020125 its reverse (52102010001), we get a palindrome (62103030126).

The spelling of 10001020125 in words is "ten billion, one million, twenty thousand, one hundred twenty-five".