216250425 has 48 divisors (see below), whose sum is σ = 399280000. Its totient is φ = 114747840.

The previous prime is 216250423. The next prime is 216250469. The reversal of 216250425 is 524052612.

216250425 is a `hidden beast` number, since 216 + 25 + 0 + 425 = 666.

It is not a de Polignac number, because 216250425 - 2¹ = 216250423 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (216250423) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 153876 + ... + 155274.

Almost surely, 2^216250425 is an apocalyptic number.

216250425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

216250425 is a deficient number, since it is larger than the sum of its proper divisors (183029575).

216250425 is a wasteful number, since it uses less digits than its factorization.

216250425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1647 (or 1636 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The square root of 216250425 is about 14705.4556202792. The cubic root of 216250425 is about 600.2317854476.

The spelling of 216250425 in words is "two hundred sixteen million, two hundred fifty thousand, four hundred twenty-five".