265156225488 has 400 divisors, whose sum is σ = 960540235776. Its totient is φ = 68603086080.

The previous prime is 265156225487. The next prime is 265156225517. The reversal of 265156225488 is 884522651562.

265156225488 is a `hidden beast` number, since 2 + 6 + 5 + 1 + 5 + 622 + 5 + 4 + 8 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (265156225483) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 26240245 + ... + 26250347.

Almost surely, 2^265156225488 is an apocalyptic number.

265156225488 is a gapful number since it is divisible by the number (28) 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 265156225488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (480270117888).

265156225488 is an abundant number, since it is smaller than the sum of its proper divisors (695384010288).

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

265156225488 is a wasteful number, since it uses less digits than its factorization.

265156225488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10404 (or 10389 counting only the distinct ones).

The product of its digits is 9216000, while the sum is 54.

The spelling of 265156225488 in words is "two hundred sixty-five billion, one hundred fifty-six million, two hundred twenty-five thousand, four hundred eighty-eight".