523406725 has 6 divisors (see below), whose sum is σ = 649024370. Its totient is φ = 418725360.

The previous prime is 523406687. The next prime is 523406729. The reversal of 523406725 is 527604325.

It can be written as a sum of positive squares in 3 ways, for example, as 33802596 + 489604129 = 5814^2 + 22127^2 .

It is not a de Polignac number, because 523406725 - 2¹⁵ = 523373957 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (523406729) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10468110 + ... + 10468159.

Almost surely, 2^523406725 is an apocalyptic number.

It is an amenable number.

523406725 is a deficient number, since it is larger than the sum of its proper divisors (125617645).

523406725 is a wasteful number, since it uses less digits than its factorization.

523406725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20936279 (or 20936274 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 34.

The square root of 523406725 is about 22878.0839451209. The cubic root of 523406725 is about 805.8974213036.

The spelling of 523406725 in words is "five hundred twenty-three million, four hundred six thousand, seven hundred twenty-five".