525553120640 has 192 divisors, whose sum is σ = 1382544903600. Its totient is φ = 190495641600.

The previous prime is 525553120591. The next prime is 525553120691. The reversal of 525553120640 is 46021355525.

It is a super-2 number, since 2×525553120640² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a junction number, because it is equal to n+sod(n) for n = 525553120594 and 525553120603.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6391790 + ... + 6473490.

Almost surely, 2^525553120640 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 525553120640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (691272451800).

525553120640 is an abundant number, since it is smaller than the sum of its proper divisors (856991782960).

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

525553120640 is a wasteful number, since it uses less digits than its factorization.

525553120640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81785 (or 81750 counting only the distinct ones).

The product of its (nonzero) digits is 180000, while the sum is 38.

The spelling of 525553120640 in words is "five hundred twenty-five billion, five hundred fifty-three million, one hundred twenty thousand, six hundred forty".