12520555 has 8 divisors (see below), whose sum is σ = 15271344. Its totient is φ = 9852000.

The previous prime is 12520553. The next prime is 12520597. The reversal of 12520555 is 55502521.

It is a happy number.

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

It is not a de Polignac number, because 12520555 - 2¹ = 12520553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12520553) 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, 20221 + ... + 20830.

It is an arithmetic number, because the mean of its divisors is an integer number (1908918).

Almost surely, 2^12520555 is an apocalyptic number.

12520555 is a deficient number, since it is larger than the sum of its proper divisors (2750789).

12520555 is an equidigital number, since it uses as much as digits as its factorization.

12520555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41117.

The product of its (nonzero) digits is 2500, while the sum is 25.

The square root of 12520555 is about 3538.4396278586. The cubic root of 12520555 is about 232.2065824939.

The spelling of 12520555 in words is "twelve million, five hundred twenty thousand, five hundred fifty-five".