525245400 has 144 divisors (see below), whose sum is σ = 1821044160. Its totient is φ = 135532800.

The previous prime is 525245393. The next prime is 525245401. The reversal of 525245400 is 4542525.

525245400 is a `hidden beast` number, since 5 + 252 + 4 + 5 + 400 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (525245401) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 51094 + ... + 60506.

It is an arithmetic number, because the mean of its divisors is an integer number (12646140).

Almost surely, 2^525245400 is an apocalyptic number.

525245400 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 525245400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (910522080).

525245400 is an abundant number, since it is smaller than the sum of its proper divisors (1295798760).

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

525245400 is a wasteful number, since it uses less digits than its factorization.

525245400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9466 (or 9454 counting only the distinct ones).

The product of its (nonzero) digits is 8000, while the sum is 27.

The square root of 525245400 is about 22918.2329161740. The cubic root of 525245400 is about 806.8399972076.

Adding to 525245400 its reverse (4542525), we get a palindrome (529787925).

The spelling of 525245400 in words is "five hundred twenty-five million, two hundred forty-five thousand, four hundred".