265400552500 has 60 divisors (see below), whose sum is σ = 580834548448. Its totient is φ = 106076700000.

The previous prime is 265400552477. The next prime is 265400552507. The reversal of 265400552500 is 5255004562.

265400552500 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (265400552507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 3186385 + ... + 3268615.

Almost surely, 2^265400552500 is an apocalyptic number.

265400552500 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 265400552500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (290417274224).

265400552500 is an abundant number, since it is smaller than the sum of its proper divisors (315433995948).

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

265400552500 is a wasteful number, since it uses less digits than its factorization.

265400552500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83546 (or 83529 counting only the distinct ones).

The product of its (nonzero) digits is 60000, while the sum is 34.

The spelling of 265400552500 in words is "two hundred sixty-five billion, four hundred million, five hundred fifty-two thousand, five hundred".