1161500125 has 8 divisors (see below), whose sum is σ = 1449552312. Its totient is φ = 929200000.

The previous prime is 1161500117. The next prime is 1161500149. The reversal of 1161500125 is 5210051611.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 3663396 + 1157836729 = 1914^2 + 34027^2 .

It is not a de Polignac number, because 1161500125 - 2³ = 1161500117 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1161500096 and 1161500105.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 4645876 + ... + 4646125.

It is an arithmetic number, because the mean of its divisors is an integer number (181194039).

Almost surely, 2^1161500125 is an apocalyptic number.

It is an amenable number.

1161500125 is a deficient number, since it is larger than the sum of its proper divisors (288052187).

1161500125 is an frugal number, since it uses more digits than its factorization.

1161500125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9292016 (or 9292006 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 22.

The square root of 1161500125 is about 34080.7882097818. The cubic root of 1161500125 is about 1051.1703126402.

Adding to 1161500125 its reverse (5210051611), we get a palindrome (6371551736).

The spelling of 1161500125 in words is "one billion, one hundred sixty-one million, five hundred thousand, one hundred twenty-five".