245285520 has 160 divisors (see below), whose sum is σ = 816376320. Its totient is φ = 60702720.

The previous prime is 245285507. The next prime is 245285561. The reversal of 245285520 is 25582542.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 321940 + ... + 322700.

It is an arithmetic number, because the mean of its divisors is an integer number (5102352).

Almost surely, 2^245285520 is an apocalyptic number.

245285520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 245285520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (408188160).

245285520 is an abundant number, since it is smaller than the sum of its proper divisors (571090800).

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

245285520 is a wasteful number, since it uses less digits than its factorization.

245285520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 873 (or 867 counting only the distinct ones).

The product of its (nonzero) digits is 32000, while the sum is 33.

The square root of 245285520 is about 15661.5937886283. The cubic root of 245285520 is about 625.9754538583.

The spelling of 245285520 in words is "two hundred forty-five million, two hundred eighty-five thousand, five hundred twenty".