525145631 has 4 divisors (see below), whose sum is σ = 525203064. Its totient is φ = 525088200.

The previous prime is 525145619. The next prime is 525145633. The reversal of 525145631 is 136541525.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 525145631 - 2²⁶ = 458036767 is a prime.

It is a super-2 number, since 2×525145631² = 551555867516776322, 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 (525145633) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 11600 + ... + 34421.

It is an arithmetic number, because the mean of its divisors is an integer number (131300766).

Almost surely, 2^525145631 is an apocalyptic number.

525145631 is a deficient number, since it is larger than the sum of its proper divisors (57433).

525145631 is a wasteful number, since it uses less digits than its factorization.

525145631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57432.

The product of its digits is 18000, while the sum is 32.

The square root of 525145631 is about 22916.0561833837. The cubic root of 525145631 is about 806.7889082518.

The spelling of 525145631 in words is "five hundred twenty-five million, one hundred forty-five thousand, six hundred thirty-one".