525310381 has 4 divisors (see below), whose sum is σ = 525388032. Its totient is φ = 525232732.

The previous prime is 525310367. The next prime is 525310417. The reversal of 525310381 is 183013525.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 525310381 - 2²⁵ = 491755949 is a prime.

It is a super-2 number, since 2×525310381² = 551901992772730322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (525313381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27595 + ... + 42568.

It is an arithmetic number, because the mean of its divisors is an integer number (131347008).

Almost surely, 2^525310381 is an apocalyptic number.

It is an amenable number.

525310381 is a deficient number, since it is larger than the sum of its proper divisors (77651).

525310381 is an equidigital number, since it uses as much as digits as its factorization.

525310381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77650.

The product of its (nonzero) digits is 3600, while the sum is 28.

The square root of 525310381 is about 22919.6505427112. The cubic root of 525310381 is about 806.8732687082.

The spelling of 525310381 in words is "five hundred twenty-five million, three hundred ten thousand, three hundred eighty-one".