5215256645 has 8 divisors (see below), whose sum is σ = 6259438080. Its totient is φ = 4171451920.

The previous prime is 5215256633. The next prime is 5215256659. The reversal of 5215256645 is 5466525125.

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

It is not a de Polignac number, because 5215256645 - 2¹⁰ = 5215255621 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, 62765 + ... + 119874.

It is an arithmetic number, because the mean of its divisors is an integer number (782429760).

Almost surely, 2^5215256645 is an apocalyptic number.

It is an amenable number.

5215256645 is a deficient number, since it is larger than the sum of its proper divisors (1044181435).

5215256645 is a wasteful number, since it uses less digits than its factorization.

5215256645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188355.

The product of its digits is 360000, while the sum is 41.

The square root of 5215256645 is about 72216.7338294941. The cubic root of 5215256645 is about 1734.1709027998.

The spelling of 5215256645 in words is "five billion, two hundred fifteen million, two hundred fifty-six thousand, six hundred forty-five".