525489915840 has 224 divisors, whose sum is σ = 1770532603200. Its totient is φ = 131592093696.

The previous prime is 525489915833. The next prime is 525489915887. The reversal of 525489915840 is 48519984525.

525489915840 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×525489915840² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7291824 + ... + 7363536.

Almost surely, 2^525489915840 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 525489915840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (885266301600).

525489915840 is an abundant number, since it is smaller than the sum of its proper divisors (1245042687360).

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

525489915840 is a wasteful number, since it uses less digits than its factorization.

525489915840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72199 (or 72189 counting only the distinct ones).

The product of its (nonzero) digits is 20736000, while the sum is 60.

The spelling of 525489915840 in words is "five hundred twenty-five billion, four hundred eighty-nine million, nine hundred fifteen thousand, eight hundred forty".