215425133 has 24 divisors (see below), whose sum is σ = 273260736. Its totient is φ = 166224960.

The previous prime is 215425127. The next prime is 215425163. The reversal of 215425133 is 331524512.

It is a happy number.

215425133 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 215425133 - 2¹⁴ = 215408749 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215425163) 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, 89441 + ... + 91817.

It is an arithmetic number, because the mean of its divisors is an integer number (11385864).

Almost surely, 2^215425133 is an apocalyptic number.

It is an amenable number.

215425133 is a deficient number, since it is larger than the sum of its proper divisors (57835603).

215425133 is a wasteful number, since it uses less digits than its factorization.

215425133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2513 (or 2502 counting only the distinct ones).

The product of its digits is 3600, while the sum is 26.

The square root of 215425133 is about 14677.3680542528. The cubic root of 215425133 is about 599.4672428304.

Adding to 215425133 its reverse (331524512), we get a palindrome (546949645).

The spelling of 215425133 in words is "two hundred fifteen million, four hundred twenty-five thousand, one hundred thirty-three".