216950425 has 12 divisors (see below), whose sum is σ = 276290476. Its totient is φ = 168868800.

The previous prime is 216950423. The next prime is 216950497. The reversal of 216950425 is 524059612.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 2152089 + 214798336 = 1467^2 + 14656^2 .

It is not a de Polignac number, because 216950425 - 2¹ = 216950423 is a prime.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (216950423) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 116346 + ... + 118195.

Almost surely, 2^216950425 is an apocalyptic number.

216950425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

216950425 is a deficient number, since it is larger than the sum of its proper divisors (59340051).

216950425 is a wasteful number, since it uses less digits than its factorization.

216950425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234588 (or 234583 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 34.

The square root of 216950425 is about 14729.2370813970. The cubic root of 216950425 is about 600.8787355596.

The spelling of 216950425 in words is "two hundred sixteen million, nine hundred fifty thousand, four hundred twenty-five".