265155379200 has 864 divisors, whose sum is σ = 1012878609120. Its totient is φ = 68797071360.

The previous prime is 265155379121. The next prime is 265155379207. The reversal of 265155379200 is 2973551562.

265155379200 is a `hidden beast` number, since 2 + 6 + 5 + 1 + 553 + 7 + 92 + 0 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (864).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (265155379207) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 7166361582 + ... + 7166361618.

It is an arithmetic number, because the mean of its divisors is an integer number (1172313205).

Almost surely, 2^265155379200 is an apocalyptic number.

265155379200 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 265155379200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (506439304560).

265155379200 is an abundant number, since it is smaller than the sum of its proper divisors (747723229920).

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

265155379200 is an frugal number, since it uses more digits than its factorization.

265155379200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102 (or 47 counting only the distinct ones).

The product of its (nonzero) digits is 567000, while the sum is 45.

The spelling of 265155379200 in words is "two hundred sixty-five billion, one hundred fifty-five million, three hundred seventy-nine thousand, two hundred".