265120570000 has 400 divisors, whose sum is σ = 757619134272. Its totient is φ = 88577280000.

The previous prime is 265120569979. The next prime is 265120570003. The reversal of 265120570000 is 75021562.

It is a tau number, because it is divible by the number of its divisors (400).

It is not an unprimeable number, because it can be changed into a prime (265120570003) 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, 567709767 + ... + 567710233.

Almost surely, 2^265120570000 is an apocalyptic number.

265120570000 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 265120570000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (378809567136).

265120570000 is an abundant number, since it is smaller than the sum of its proper divisors (492498564272).

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

265120570000 is a wasteful number, since it uses less digits than its factorization.

265120570000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 916 (or 895 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 28.

Adding to 265120570000 its reverse (75021562), we get a palindrome (265195591562).

The spelling of 265120570000 in words is "two hundred sixty-five billion, one hundred twenty million, five hundred seventy thousand".