215312025 has 24 divisors (see below), whose sum is σ = 356514880. Its totient is φ = 114661440.

The previous prime is 215312011. The next prime is 215312057. The reversal of 215312025 is 520213512.

It is not a de Polignac number, because 215312025 - 2⁶ = 215311961 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 215311992 and 215312010.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 60444 + ... + 63906.

Almost surely, 2^215312025 is an apocalyptic number.

215312025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

215312025 is a deficient number, since it is larger than the sum of its proper divisors (141202855).

215312025 is a wasteful number, since it uses less digits than its factorization.

215312025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4305 (or 4300 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 215312025 is about 14673.5144052132. The cubic root of 215312025 is about 599.3623086007.

Adding to 215312025 its reverse (520213512), we get a palindrome (735525537).

The spelling of 215312025 in words is "two hundred fifteen million, three hundred twelve thousand, twenty-five".