623143525 has 12 divisors (see below), whose sum is σ = 787278852. Its totient is φ = 489107840.

The previous prime is 623143523. The next prime is 623143537. The reversal of 623143525 is 525341326.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 54893281 + 568250244 = 7409^2 + 23838^2 .

It is not a de Polignac number, because 623143525 - 2¹ = 623143523 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (623143523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 233824 + ... + 236473.

It is an arithmetic number, because the mean of its divisors is an integer number (65606571).

Almost surely, 2^623143525 is an apocalyptic number.

It is an amenable number.

623143525 is a deficient number, since it is larger than the sum of its proper divisors (164135327).

623143525 is a wasteful number, since it uses less digits than its factorization.

623143525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 470360 (or 470355 counting only the distinct ones).

The product of its digits is 21600, while the sum is 31.

The square root of 623143525 is about 24962.8428869790. The cubic root of 623143525 is about 854.1405930834.

The spelling of 623143525 in words is "six hundred twenty-three million, one hundred forty-three thousand, five hundred twenty-five".