11989056825 has 36 divisors (see below), whose sum is σ = 21973139760. Its totient is φ = 6245457120.

The previous prime is 11989056817. The next prime is 11989056841. The reversal of 11989056825 is 52865098911.

It is not a de Polignac number, because 11989056825 - 2³ = 11989056817 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 609915 + ... + 629264.

Almost surely, 2^11989056825 is an apocalyptic number.

11989056825 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11989056825 is a deficient number, since it is larger than the sum of its proper divisors (9984082935).

11989056825 is a wasteful number, since it uses less digits than its factorization.

11989056825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1239238 (or 1239230 counting only the distinct ones).

The product of its (nonzero) digits is 1555200, while the sum is 54.

It can be divided in two parts, 119890 and 56825, that added together give a triangular number (176715 = T₅₉₄).

The spelling of 11989056825 in words is "eleven billion, nine hundred eighty-nine million, fifty-six thousand, eight hundred twenty-five".