2015215205 has 8 divisors (see below), whose sum is σ = 2419983000. Its totient is φ = 1611022336.

The previous prime is 2015215201. The next prime is 2015215211. The reversal of 2015215205 is 5025125102.

It can be written as a sum of positive squares in 4 ways, for example, as 148888804 + 1866326401 = 12202^2 + 43201^2 .

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 2015215205 - 2² = 2015215201 is a prime.

It is a super-2 number, since 2×2015215205² = 8122184644926384050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2015215201) 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, 135980 + ... + 150069.

It is an arithmetic number, because the mean of its divisors is an integer number (302497875).

Almost surely, 2^2015215205 is an apocalyptic number.

It is an amenable number.

2015215205 is a deficient number, since it is larger than the sum of its proper divisors (404767795).

2015215205 is a wasteful number, since it uses less digits than its factorization.

2015215205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 287463.

The product of its (nonzero) digits is 1000, while the sum is 23.

The square root of 2015215205 is about 44891.1484036664. The cubic root of 2015215205 is about 1263.1079747296.

The spelling of 2015215205 in words is "two billion, fifteen million, two hundred fifteen thousand, two hundred five".