1265236000 has 192 divisors, whose sum is σ = 3607269120. Its totient is φ = 427161600.

The previous prime is 1265235997. The next prime is 1265236001. The reversal of 1265236000 is 6325621.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is not an unprimeable number, because it can be changed into a prime (1265236001) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2043691 + ... + 2044309.

It is an arithmetic number, because the mean of its divisors is an integer number (18787860).

Almost surely, 2^1265236000 is an apocalyptic number.

1265236000 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 1265236000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1803634560).

1265236000 is an abundant number, since it is smaller than the sum of its proper divisors (2342033120).

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

1265236000 is an equidigital number, since it uses as much as digits as its factorization.

1265236000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 724 (or 706 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 1265236000 is about 35570.1560300204. The cubic root of 1265236000 is about 1081.5763446299.

The spelling of 1265236000 in words is "one billion, two hundred sixty-five million, two hundred thirty-six thousand".