215013325 has 6 divisors (see below), whose sum is σ = 266616554. Its totient is φ = 172010640.

The previous prime is 215013311. The next prime is 215013341. The reversal of 215013325 is 523310512.

It can be written as a sum of positive squares in 3 ways, for example, as 49196196 + 165817129 = 7014^2 + 12877^2 .

It is not a de Polignac number, because 215013325 - 2¹⁷ = 214882253 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 215013296 and 215013305.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4300242 + ... + 4300291.

Almost surely, 2^215013325 is an apocalyptic number.

215013325 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

215013325 is a deficient number, since it is larger than the sum of its proper divisors (51603229).

215013325 is an equidigital number, since it uses as much as digits as its factorization.

215013325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8600543 (or 8600538 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 22.

The square root of 215013325 is about 14663.3326703038. The cubic root of 215013325 is about 599.0850174245.

Adding to 215013325 its reverse (523310512), we get a palindrome (738323837).

The spelling of 215013325 in words is "two hundred fifteen million, thirteen thousand, three hundred twenty-five".