215532425 has 12 divisors (see below), whose sum is σ = 278880960. Its totient is φ = 164928720.

The previous prime is 215532419. The next prime is 215532431. The reversal of 215532425 is 524235512.

It is an interprime number because it is at equal distance from previous prime (215532419) and next prime (215532431).

It is not a de Polignac number, because 215532425 - 2⁸ = 215532169 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 186845 + ... + 187994.

It is an arithmetic number, because the mean of its divisors is an integer number (23240080).

Almost surely, 2^215532425 is an apocalyptic number.

215532425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

215532425 is a deficient number, since it is larger than the sum of its proper divisors (63348535).

215532425 is a wasteful number, since it uses less digits than its factorization.

215532425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 374872 (or 374867 counting only the distinct ones).

The product of its digits is 12000, while the sum is 29.

The square root of 215532425 is about 14681.0226142459. The cubic root of 215532425 is about 599.5667474141.

Adding to 215532425 its reverse (524235512), we get a palindrome (739767937).

The spelling of 215532425 in words is "two hundred fifteen million, five hundred thirty-two thousand, four hundred twenty-five".