265624903680 has 448 divisors, whose sum is σ = 887192137728. Its totient is φ = 67782574080.

The previous prime is 265624903669. The next prime is 265624903697. The reversal of 265624903680 is 86309426562.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 392355502 + ... + 392356178.

Almost surely, 2^265624903680 is an apocalyptic number.

265624903680 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 265624903680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (443596068864).

265624903680 is an abundant number, since it is smaller than the sum of its proper divisors (621567234048).

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

265624903680 is a wasteful number, since it uses less digits than its factorization.

265624903680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 845 (or 821 counting only the distinct ones).

The product of its (nonzero) digits is 3732480, while the sum is 51.

The spelling of 265624903680 in words is "two hundred sixty-five billion, six hundred twenty-four million, nine hundred three thousand, six hundred eighty".