215252275 has 12 divisors (see below), whose sum is σ = 305043472. Its totient is φ = 147601440.

The previous prime is 215252269. The next prime is 215252293. The reversal of 215252275 is 572252512.

It is not a de Polignac number, because 215252275 - 2³ = 215252267 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 614832 + ... + 615181.

Almost surely, 2^215252275 is an apocalyptic number.

215252275 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

215252275 is a deficient number, since it is larger than the sum of its proper divisors (89791197).

215252275 is a wasteful number, since it uses less digits than its factorization.

215252275 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1230030 (or 1230025 counting only the distinct ones).

The product of its digits is 14000, while the sum is 31.

The square root of 215252275 is about 14671.4782827089. The cubic root of 215252275 is about 599.3068616107.

The spelling of 215252275 in words is "two hundred fifteen million, two hundred fifty-two thousand, two hundred seventy-five".