523408725 has 72 divisors (see below), whose sum is σ = 1075268480. Its totient is φ = 238412160.

The previous prime is 523408703. The next prime is 523408763. The reversal of 523408725 is 527804325.

It is not a de Polignac number, because 523408725 - 2⁵ = 523408693 is a prime.

It is a super-2 number, since 2×523408725² = 547913386812251250, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 523408725.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 691047 + ... + 691803.

Almost surely, 2^523408725 is an apocalyptic number.

It is an amenable number.

523408725 is an abundant number, since it is smaller than the sum of its proper divisors (551859755).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

523408725 is a wasteful number, since it uses less digits than its factorization.

523408725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1219 (or 1211 counting only the distinct ones).

The product of its (nonzero) digits is 67200, while the sum is 36.

The square root of 523408725 is about 22878.1276550333. The cubic root of 523408725 is about 805.8984477793.

The spelling of 523408725 in words is "five hundred twenty-three million, four hundred eight thousand, seven hundred twenty-five".