1129869825 has 96 divisors (see below), whose sum is σ = 2247284736. Its totient is φ = 489730560.

The previous prime is 1129869781. The next prime is 1129869833. The reversal of 1129869825 is 5289689211.

It is not a de Polignac number, because 1129869825 - 2⁶ = 1129869761 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1653934 + ... + 1654616.

It is an arithmetic number, because the mean of its divisors is an integer number (23409216).

Almost surely, 2^1129869825 is an apocalyptic number.

1129869825 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1129869825 is a deficient number, since it is larger than the sum of its proper divisors (1117414911).

1129869825 is a wasteful number, since it uses less digits than its factorization.

1129869825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 863 (or 858 counting only the distinct ones).

The product of its digits is 622080, while the sum is 51.

The square root of 1129869825 is about 33613.5363358276. The cubic root of 1129869825 is about 1041.5404393891.

The spelling of 1129869825 in words is "one billion, one hundred twenty-nine million, eight hundred sixty-nine thousand, eight hundred twenty-five".