1256122152 has 48 divisors (see below), whose sum is σ = 3403739040. Its totient is φ = 418493088.

The previous prime is 1256122117. The next prime is 1256122159. The reversal of 1256122152 is 2512216521.

1256122152 is a `hidden beast` number, since 1 + 25 + 612 + 21 + 5 + 2 = 666.

It is a super-2 number, since 2×1256122152² = 3155685721490222208, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1256122159) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 204843 + ... + 210885.

It is an arithmetic number, because the mean of its divisors is an integer number (70911230).

Almost surely, 2^1256122152 is an apocalyptic number.

1256122152 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1256122152 is an abundant number, since it is smaller than the sum of its proper divisors (2147616888).

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

1256122152 is a wasteful number, since it uses less digits than its factorization.

1256122152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8942 (or 8935 counting only the distinct ones).

The product of its digits is 2400, while the sum is 27.

The square root of 1256122152 is about 35441.8136104799. The cubic root of 1256122152 is about 1078.9731185842.

Adding to 1256122152 its reverse (2512216521), we get a palindrome (3768338673).

The spelling of 1256122152 in words is "one billion, two hundred fifty-six million, one hundred twenty-two thousand, one hundred fifty-two".