525340215 has 64 divisors (see below), whose sum is σ = 992640000. Its totient is φ = 262859904.

The previous prime is 525340213. The next prime is 525340247. The reversal of 525340215 is 512043525.

It is a happy number.

525340215 is a `hidden beast` number, since 5 + 253 + 402 + 1 + 5 = 666.

It is not a de Polignac number, because 525340215 - 2¹ = 525340213 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (525340213) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 278646 + ... + 280524.

It is an arithmetic number, because the mean of its divisors is an integer number (15510000).

Almost surely, 2^525340215 is an apocalyptic number.

525340215 is a deficient number, since it is larger than the sum of its proper divisors (467299785).

525340215 is a wasteful number, since it uses less digits than its factorization.

525340215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2021 (or 2015 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 27.

The square root of 525340215 is about 22920.3013723642. The cubic root of 525340215 is about 806.8885433612. Note that the first 3 decimals are identical.

The spelling of 525340215 in words is "five hundred twenty-five million, three hundred forty thousand, two hundred fifteen".