1255213000 has 64 divisors (see below), whose sum is σ = 3005608320. Its totient is φ = 490392000.

The previous prime is 1255212983. The next prime is 1255213031. The reversal of 1255213000 is 3125521.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28405 + ... + 57595.

It is an arithmetic number, because the mean of its divisors is an integer number (46962630).

Almost surely, 2^1255213000 is an apocalyptic number.

1255213000 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 1255213000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1502804160).

1255213000 is an abundant number, since it is smaller than the sum of its proper divisors (1750395320).

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

1255213000 is a wasteful number, since it uses less digits than its factorization.

1255213000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29255 (or 29241 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 19.

The square root of 1255213000 is about 35428.9853086424. The cubic root of 1255213000 is about 1078.7127438732.

Adding to 1255213000 its reverse (3125521), we get a palindrome (1258338521).

It can be divided in two parts, 12552 and 13000, that added together give a palindrome (25552).

The spelling of 1255213000 in words is "one billion, two hundred fifty-five million, two hundred thirteen thousand".