525402423 has 64 divisors (see below), whose sum is σ = 980474880. Its totient is φ = 270635904.

The previous prime is 525402419. The next prime is 525402431. The reversal of 525402423 is 324204525.

It is a happy number.

It is not a de Polignac number, because 525402423 - 2² = 525402419 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (525402403) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 103165 + ... + 108137.

It is an arithmetic number, because the mean of its divisors is an integer number (15319920).

Almost surely, 2^525402423 is an apocalyptic number.

525402423 is a deficient number, since it is larger than the sum of its proper divisors (455072457).

525402423 is a wasteful number, since it uses less digits than its factorization.

525402423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5045 (or 5039 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 27.

The square root of 525402423 is about 22921.6583824120. The cubic root of 525402423 is about 806.9203912571.

Adding to 525402423 its reverse (324204525), we get a palindrome (849606948).

It can be divided in two parts, 525402 and 423, that added together give a triangular number (525825 = T₁₀₂₅).

The spelling of 525402423 in words is "five hundred twenty-five million, four hundred two thousand, four hundred twenty-three".