120425540535521 has 8 divisors (see below), whose sum is σ = 129689480280360. Its totient is φ = 111161663165952.

The previous prime is 120425540535511. The next prime is 120425540535529. The reversal of 120425540535521 is 125535045524021.

It can be written as a sum of positive squares in 4 ways, for example, as 952683363025 + 119472857172496 = 976055^2 + 10930364^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 120425540535521 - 2²² = 120425536341217 is a prime.

It is a super-2 number, since 2×120425540535521² (a number of 29 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (120425540535529) 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, 11545040 + ... + 19342673.

It is an arithmetic number, because the mean of its divisors is an integer number (16211185035045).

Almost surely, 2^{120425540535521} is an apocalyptic number.

It is an amenable number.

120425540535521 is a deficient number, since it is larger than the sum of its proper divisors (9263939744839).

120425540535521 is a wasteful number, since it uses less digits than its factorization.

120425540535521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31187635.

The product of its (nonzero) digits is 1200000, while the sum is 44.

The spelling of 120425540535521 in words is "one hundred twenty trillion, four hundred twenty-five billion, five hundred forty million, five hundred thirty-five thousand, five hundred twenty-one".