525245424 has 160 divisors (see below), whose sum is σ = 1597397760. Its totient is φ = 146995200.

The previous prime is 525245401. The next prime is 525245429. The reversal of 525245424 is 424542525.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (525245429) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 410674 + ... + 411950.

It is an arithmetic number, because the mean of its divisors is an integer number (9983736).

Almost surely, 2^525245424 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 525245424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (798698880).

525245424 is an abundant number, since it is smaller than the sum of its proper divisors (1072152336).

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

525245424 is a wasteful number, since it uses less digits than its factorization.

525245424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1359 (or 1353 counting only the distinct ones).

The product of its digits is 64000, while the sum is 33.

The square root of 525245424 is about 22918.2334397745. The cubic root of 525245424 is about 806.8400094965.

Adding to 525245424 its reverse (424542525), we get a palindrome (949787949).

The spelling of 525245424 in words is "five hundred twenty-five million, two hundred forty-five thousand, four hundred twenty-four".