120205400425 has 12 divisors (see below), whose sum is σ = 162605123856. Its totient is φ = 87422109200.

The previous prime is 120205400423. The next prime is 120205400431. The reversal of 120205400425 is 524004502021.

It is not a de Polignac number, because 120205400425 - 2¹ = 120205400423 is a prime.

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 120205400425.

It is not an unprimeable number, because it can be changed into a prime (120205400423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 218554999 + ... + 218555548.

It is an arithmetic number, because the mean of its divisors is an integer number (13550426988).

Almost surely, 2^120205400425 is an apocalyptic number.

It is an amenable number.

120205400425 is a deficient number, since it is larger than the sum of its proper divisors (42399723431).

120205400425 is a wasteful number, since it uses less digits than its factorization.

120205400425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 437110568 (or 437110563 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 25.

Adding to 120205400425 its reverse (524004502021), we get a palindrome (644209902446).

The spelling of 120205400425 in words is "one hundred twenty billion, two hundred five million, four hundred thousand, four hundred twenty-five".