215425472 has 14 divisors (see below), whose sum is σ = 427485048. Its totient is φ = 107712704.

The previous prime is 215425453. The next prime is 215425523. The reversal of 215425472 is 274524512.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1682948 + ... + 1683075.

Almost surely, 2^215425472 is an apocalyptic number.

It is an amenable number.

215425472 is a deficient number, since it is larger than the sum of its proper divisors (212059576).

215425472 is an equidigital number, since it uses as much as digits as its factorization.

215425472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3366035 (or 3366025 counting only the distinct ones).

The product of its digits is 22400, while the sum is 32.

The square root of 215425472 is about 14677.3796026402. The cubic root of 215425472 is about 599.4675572773.

Adding to 215425472 its reverse (274524512), we get a palindrome (489949984).

The spelling of 215425472 in words is "two hundred fifteen million, four hundred twenty-five thousand, four hundred seventy-two".