525006405 has 48 divisors (see below), whose sum is σ = 1134566784. Its totient is φ = 218183040.

The previous prime is 525006397. The next prime is 525006413. The reversal of 525006405 is 504600525.

525006405 is a `hidden beast` number, since 5 + 250 + 0 + 6 + 405 = 666.

It is an interprime number because it is at equal distance from previous prime (525006397) and next prime (525006413).

It is not a de Polignac number, because 525006405 - 2³ = 525006397 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 72294 + ... + 79223.

It is an arithmetic number, because the mean of its divisors is an integer number (23636808).

Almost surely, 2^525006405 is an apocalyptic number.

525006405 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

525006405 is an abundant number, since it is smaller than the sum of its proper divisors (609560379).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

525006405 is a wasteful number, since it uses less digits than its factorization.

525006405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151546 (or 151543 counting only the distinct ones).

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

The square root of 525006405 is about 22913.0182429116. The cubic root of 525006405 is about 806.7176036372.

The spelling of 525006405 in words is "five hundred twenty-five million, six thousand, four hundred five".