10520400122125 has 32 divisors (see below), whose sum is σ = 13553683034112. Its totient is φ = 8144409600000.

The previous prime is 10520400122107. The next prime is 10520400122129. The reversal of 10520400122125 is 52122100402501.

It is not a de Polignac number, because 10520400122125 - 2⁷ = 10520400121997 is a prime.

It is a super-2 number, since 2×10520400122125² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 10520400122125.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10520400122129) 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, 91264525 + ... + 91379725.

It is an arithmetic number, because the mean of its divisors is an integer number (423552594816).

Almost surely, 2^{10520400122125} is an apocalyptic number.

It is an amenable number.

10520400122125 is a deficient number, since it is larger than the sum of its proper divisors (3033282911987).

10520400122125 is a wasteful number, since it uses less digits than its factorization.

10520400122125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138814 (or 138804 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 25.

Adding to 10520400122125 its reverse (52122100402501), we get a palindrome (62642500524626).

The spelling of 10520400122125 in words is "ten trillion, five hundred twenty billion, four hundred million, one hundred twenty-two thousand, one hundred twenty-five".