525464280 has 192 divisors, whose sum is σ = 1925733600. Its totient is φ = 127353600.

The previous prime is 525464263. The next prime is 525464281. The reversal of 525464280 is 82464525.

It is a happy number.

525464280 is a `hidden beast` number, since 5 + 2 + 5 + 4 + 642 + 8 + 0 = 666.

It is a super-2 number, since 2×525464280² = 552225419111836800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (525464281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 128670 + ... + 132690.

Almost surely, 2^525464280 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 525464280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (962866800).

525464280 is an abundant number, since it is smaller than the sum of its proper divisors (1400269320).

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

525464280 is a wasteful number, since it uses less digits than its factorization.

525464280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4063 (or 4042 counting only the distinct ones).

The product of its (nonzero) digits is 76800, while the sum is 36.

The square root of 525464280 is about 22923.0076560647. The cubic root of 525464280 is about 806.9520569630.

The spelling of 525464280 in words is "five hundred twenty-five million, four hundred sixty-four thousand, two hundred eighty".