1255511412 has 72 divisors (see below), whose sum is σ = 3361481760. Its totient is φ = 394009920.

The previous prime is 1255511363. The next prime is 1255511441. The reversal of 1255511412 is 2141155521.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 105862 + ... + 117122.

Almost surely, 2^1255511412 is an apocalyptic number.

1255511412 is a gapful number since it is divisible by the number (12) 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 1255511412, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1680740880).

1255511412 is an abundant number, since it is smaller than the sum of its proper divisors (2105970348).

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

1255511412 is a wasteful number, since it uses less digits than its factorization.

1255511412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11453 (or 11448 counting only the distinct ones).

The product of its digits is 2000, while the sum is 27.

The square root of 1255511412 is about 35433.1964688482. The cubic root of 1255511412 is about 1078.7982208192.

Adding to 1255511412 its reverse (2141155521), we get a palindrome (3396666933).

The spelling of 1255511412 in words is "one billion, two hundred fifty-five million, five hundred eleven thousand, four hundred twelve".