1256249112 has 16 divisors (see below), whose sum is σ = 3140622840. Its totient is φ = 418749696.

The previous prime is 1256249101. The next prime is 1256249117. The reversal of 1256249112 is 2119426521.

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1256249117) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26171833 + ... + 26171880.

Almost surely, 2^1256249112 is an apocalyptic number.

1256249112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1256249112 is an abundant number, since it is smaller than the sum of its proper divisors (1884373728).

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

1256249112 is a wasteful number, since it uses less digits than its factorization.

1256249112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52343722 (or 52343718 counting only the distinct ones).

The product of its digits is 8640, while the sum is 33.

The square root of 1256249112 is about 35443.6046699542. The cubic root of 1256249112 is about 1079.0094690331.

The spelling of 1256249112 in words is "one billion, two hundred fifty-six million, two hundred forty-nine thousand, one hundred twelve".