525147840 has 448 divisors, whose sum is σ = 2233574400. Its totient is φ = 113467392.

The previous prime is 525147817. The next prime is 525147851. The reversal of 525147840 is 48741525.

It is a tau number, because it is divible by the number of its divisors (448).

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

It is a junction number, because it is equal to n+sod(n) for n = 525147795 and 525147804.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1148892 + ... + 1149348.

Almost surely, 2^525147840 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 525147840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1116787200).

525147840 is an abundant number, since it is smaller than the sum of its proper divisors (1708426560).

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

525147840 is a wasteful number, since it uses less digits than its factorization.

525147840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 509 (or 493 counting only the distinct ones).

The product of its (nonzero) digits is 44800, while the sum is 36.

The square root of 525147840 is about 22916.1043809806. The cubic root of 525147840 is about 806.7900394899.

The spelling of 525147840 in words is "five hundred twenty-five million, one hundred forty-seven thousand, eight hundred forty".