525652474440 has 128 divisors (see below), whose sum is σ = 1600890946560. Its totient is φ = 138047610624.

The previous prime is 525652474439. The next prime is 525652474441. The reversal of 525652474440 is 44474256525.

It is an interprime number because it is at equal distance from previous prime (525652474439) and next prime (525652474441).

It is a self number, because there is not a number n which added to its sum of digits gives 525652474440.

It is not an unprimeable number, because it can be changed into a prime (525652474441) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 60673549 + ... + 60682211.

It is an arithmetic number, because the mean of its divisors is an integer number (12506960520).

Almost surely, 2^525652474440 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 525652474440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (800445473280).

525652474440 is an abundant number, since it is smaller than the sum of its proper divisors (1075238472120).

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

525652474440 is a wasteful number, since it uses less digits than its factorization.

525652474440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16291 (or 16287 counting only the distinct ones).

The product of its (nonzero) digits is 5376000, while the sum is 48.

The spelling of 525652474440 in words is "five hundred twenty-five billion, six hundred fifty-two million, four hundred seventy-four thousand, four hundred forty".