525570381 has 48 divisors (see below), whose sum is σ = 934602240. Its totient is φ = 277875360.

The previous prime is 525570379. The next prime is 525570391. The reversal of 525570381 is 183075525.

525570381 is a `hidden beast` number, since 5 + 2 + 5 + 570 + 3 + 81 = 666.

It is not a de Polignac number, because 525570381 - 2¹ = 525570379 is a prime.

It is a super-2 number, since 2×525570381² = 552448450768970322, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (525570301) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 46366 + ... + 56576.

It is an arithmetic number, because the mean of its divisors is an integer number (19470880).

Almost surely, 2^525570381 is an apocalyptic number.

It is an amenable number.

525570381 is a deficient number, since it is larger than the sum of its proper divisors (409031859).

525570381 is a wasteful number, since it uses less digits than its factorization.

525570381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10286 (or 10283 counting only the distinct ones).

The product of its (nonzero) digits is 42000, while the sum is 36.

The square root of 525570381 is about 22925.3218298021. The cubic root of 525570381 is about 807.0063661784.

The spelling of 525570381 in words is "five hundred twenty-five million, five hundred seventy thousand, three hundred eighty-one".