2555640215 has 8 divisors (see below), whose sum is σ = 3067249680. Its totient is φ = 2044191232.

The previous prime is 2555640133. The next prime is 2555640247. The reversal of 2555640215 is 5120465552.

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 2555640215 - 2²⁴ = 2538862999 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1745 + ... + 71514.

It is an arithmetic number, because the mean of its divisors is an integer number (383406210).

Almost surely, 2^2555640215 is an apocalyptic number.

2555640215 is a deficient number, since it is larger than the sum of its proper divisors (511609465).

2555640215 is an equidigital number, since it uses as much as digits as its factorization.

2555640215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80241.

The product of its (nonzero) digits is 60000, while the sum is 35.

The square root of 2555640215 is about 50553.3402951773. The cubic root of 2555640215 is about 1367.2037402975.

The spelling of 2555640215 in words is "two billion, five hundred fifty-five million, six hundred forty thousand, two hundred fifteen".