120425521 has 4 divisors (see below), whose sum is σ = 120473892. Its totient is φ = 120377152.

The previous prime is 120425519. The next prime is 120425567. The reversal of 120425521 is 125524021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 125524021 = 7 ⋅17932003.

It can be written as a sum of positive squares in 2 ways, for example, as 23619600 + 96805921 = 4860^2 + 9839^2 .

It is a cyclic number.

It is not a de Polignac number, because 120425521 - 2¹ = 120425519 is a prime.

It is a super-2 number, since 2×120425521² = 29004612216242882, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 120425492 and 120425501.

It is not an unprimeable number, because it can be changed into a prime (120425581) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20236 + ... + 25501.

It is an arithmetic number, because the mean of its divisors is an integer number (30118473).

Almost surely, 2^120425521 is an apocalyptic number.

It is an amenable number.

120425521 is a deficient number, since it is larger than the sum of its proper divisors (48371).

120425521 is an equidigital number, since it uses as much as digits as its factorization.

120425521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48370.

The product of its (nonzero) digits is 800, while the sum is 22.

The square root of 120425521 is about 10973.8562501976. The cubic root of 120425521 is about 493.8247410009.

Adding to 120425521 its reverse (125524021), we get a palindrome (245949542).

The spelling of 120425521 in words is "one hundred twenty million, four hundred twenty-five thousand, five hundred twenty-one".