216003425 has 24 divisors (see below), whose sum is σ = 297168480. Its totient is φ = 154419200.

The previous prime is 216003413. The next prime is 216003427. The reversal of 216003425 is 524300612.

It is not a de Polignac number, because 216003425 - 2⁸ = 216003169 is a prime.

It is a super-2 number, since 2×216003425² = 93314959223461250, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 216003425.

It is not an unprimeable number, because it can be changed into a prime (216003427) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9569 + ... + 22881.

It is an arithmetic number, because the mean of its divisors is an integer number (12382020).

Almost surely, 2^216003425 is an apocalyptic number.

216003425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

216003425 is a deficient number, since it is larger than the sum of its proper divisors (81165055).

216003425 is a wasteful number, since it uses less digits than its factorization.

216003425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13393 (or 13388 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 216003425 is about 14697.0549771034. The cubic root of 216003425 is about 600.0031712795.

The spelling of 216003425 in words is "two hundred sixteen million, three thousand, four hundred twenty-five".