525478223 has 4 divisors (see below), whose sum is σ = 525525000. Its totient is φ = 525431448.

The previous prime is 525478157. The next prime is 525478237. The reversal of 525478223 is 322874525.

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 525478223 - 2¹⁶ = 525412687 is a prime.

It is a super-2 number, since 2×525478223² = 552254725694475458, 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 (525478123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4736 + ... + 32762.

It is an arithmetic number, because the mean of its divisors is an integer number (131381250).

Almost surely, 2^525478223 is an apocalyptic number.

525478223 is a deficient number, since it is larger than the sum of its proper divisors (46777).

525478223 is a wasteful number, since it uses less digits than its factorization.

525478223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46776.

The product of its digits is 134400, while the sum is 38.

The square root of 525478223 is about 22923.3117808051. The cubic root of 525478223 is about 806.9591942912.

The spelling of 525478223 in words is "five hundred twenty-five million, four hundred seventy-eight thousand, two hundred twenty-three".