1161008025 has 12 divisors (see below), whose sum is σ = 1919533392. Its totient is φ = 619204240.

The previous prime is 1161008021. The next prime is 1161008039. The reversal of 1161008025 is 5208001611.

It is not a de Polignac number, because 1161008025 - 2² = 1161008021 is a prime.

It is a super-2 number, since 2×1161008025² = 2695879268228801250, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1161007986 and 1161008004.

It is not an unprimeable number, because it can be changed into a prime (1161008021) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7739979 + ... + 7740128.

It is an arithmetic number, because the mean of its divisors is an integer number (159961116).

Almost surely, 2^1161008025 is an apocalyptic number.

1161008025 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1161008025 is a deficient number, since it is larger than the sum of its proper divisors (758525367).

1161008025 is a wasteful number, since it uses less digits than its factorization.

1161008025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15480120 (or 15480115 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 24.

The square root of 1161008025 is about 34073.5678349069. The cubic root of 1161008025 is about 1051.0218397099.

Adding to 1161008025 its reverse (5208001611), we get a palindrome (6369009636).

The spelling of 1161008025 in words is "one billion, one hundred sixty-one million, eight thousand, twenty-five".