1255445112 has 32 divisors (see below), whose sum is σ = 3139833600. Its totient is φ = 418318944.

The previous prime is 1255445089. The next prime is 1255445117. The reversal of 1255445112 is 2115445521.

It is a super-2 number, since 2×1255445112² = 3152284858489385088, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1255445112.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1255445117) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63793 + ... + 81119.

It is an arithmetic number, because the mean of its divisors is an integer number (98119800).

Almost surely, 2^1255445112 is an apocalyptic number.

1255445112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1255445112 is an abundant number, since it is smaller than the sum of its proper divisors (1884388488).

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

1255445112 is a wasteful number, since it uses less digits than its factorization.

1255445112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20355 (or 20351 counting only the distinct ones).

The product of its digits is 8000, while the sum is 30.

The square root of 1255445112 is about 35432.2608931465. The cubic root of 1255445112 is about 1078.7792310592.

The spelling of 1255445112 in words is "one billion, two hundred fifty-five million, four hundred forty-five thousand, one hundred twelve".