215235125 has 16 divisors (see below), whose sum is σ = 306988032. Its totient is φ = 147589200.

The previous prime is 215235121. The next prime is 215235133. The reversal of 215235125 is 521532512.

215235125 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 215235125 - 2² = 215235121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 215235094 and 215235103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215235121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 122117 + ... + 123866.

It is an arithmetic number, because the mean of its divisors is an integer number (19186752).

Almost surely, 2^215235125 is an apocalyptic number.

215235125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

215235125 is a deficient number, since it is larger than the sum of its proper divisors (91752907).

215235125 is an equidigital number, since it uses as much as digits as its factorization.

215235125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246005 (or 245995 counting only the distinct ones).

The product of its digits is 3000, while the sum is 26.

The square root of 215235125 is about 14670.8938037190. The cubic root of 215235125 is about 599.2909448054.

Adding to 215235125 its reverse (521532512), we get a palindrome (736767637).

The spelling of 215235125 in words is "two hundred fifteen million, two hundred thirty-five thousand, one hundred twenty-five".