1265652000 has 192 divisors, whose sum is σ = 4607366400. Its totient is φ = 337478400.

The previous prime is 1265651993. The next prime is 1265652019. The reversal of 1265652000 is 2565621.

1265652000 is a `hidden beast` number, since 1 + 2 + 6 + 5 + 652 + 0 + 0 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 102141 + ... + 113859.

It is an arithmetic number, because the mean of its divisors is an integer number (23996700).

Almost surely, 2^1265652000 is an apocalyptic number.

1265652000 is a gapful number since it is divisible by the number (10) 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 1265652000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2303683200).

1265652000 is an abundant number, since it is smaller than the sum of its proper divisors (3341714400).

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

1265652000 is a wasteful number, since it uses less digits than its factorization.

1265652000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11753 (or 11729 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 1265652000 is about 35576.0031481897. The cubic root of 1265652000 is about 1081.6948696736.

The spelling of 1265652000 in words is "one billion, two hundred sixty-five million, six hundred fifty-two thousand".