525421433130 has 128 divisors (see below), whose sum is σ = 1384630640640. Its totient is φ = 126545717760.

The previous prime is 525421433099. The next prime is 525421433149. The reversal of 525421433130 is 31334124525.

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

It is a junction number, because it is equal to n+sod(n) for n = 525421433091 and 525421433100.

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, 35592691 + ... + 35607449.

It is an arithmetic number, because the mean of its divisors is an integer number (10817426880).

Almost surely, 2^525421433130 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 525421433130, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (692315320320).

525421433130 is an abundant number, since it is smaller than the sum of its proper divisors (859209207510).

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

525421433130 is a wasteful number, since it uses less digits than its factorization.

525421433130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15476.

The product of its (nonzero) digits is 43200, while the sum is 33.

Adding to 525421433130 its reverse (31334124525), we get a palindrome (556755557655).

The spelling of 525421433130 in words is "five hundred twenty-five billion, four hundred twenty-one million, four hundred thirty-three thousand, one hundred thirty".