525554239980 has 384 divisors, whose sum is σ = 1915170324480. Its totient is φ = 104493312000.

The previous prime is 525554239979. The next prime is 525554239999. The reversal of 525554239980 is 89932455525.

It is a self number, because there is not a number n which added to its sum of digits gives 525554239980.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 12725965 + ... + 12767195.

It is an arithmetic number, because the mean of its divisors is an integer number (4987422720).

Almost surely, 2^525554239980 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 525554239980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (957585162240).

525554239980 is an abundant number, since it is smaller than the sum of its proper divisors (1389616084500).

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

525554239980 is a wasteful number, since it uses less digits than its factorization.

525554239980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41381 (or 41379 counting only the distinct ones).

The product of its (nonzero) digits is 19440000, while the sum is 57.

The spelling of 525554239980 in words is "five hundred twenty-five billion, five hundred fifty-four million, two hundred thirty-nine thousand, nine hundred eighty".