11977825 has 24 divisors (see below), whose sum is σ = 15945408. Its totient is φ = 8902080.

The previous prime is 11977817. The next prime is 11977829. The reversal of 11977825 is 52877911.

It is not a de Polignac number, because 11977825 - 2³ = 11977817 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11977829) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 20994 + ... + 21556.

It is an arithmetic number, because the mean of its divisors is an integer number (664392).

Almost surely, 2^11977825 is an apocalyptic number.

It is an amenable number.

11977825 is a deficient number, since it is larger than the sum of its proper divisors (3967583).

11977825 is a wasteful number, since it uses less digits than its factorization.

11977825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 633 (or 628 counting only the distinct ones).

The product of its digits is 35280, while the sum is 40.

The square root of 11977825 is about 3460.8994495651. The cubic root of 11977825 is about 228.8017391203.

The spelling of 11977825 in words is "eleven million, nine hundred seventy-seven thousand, eight hundred twenty-five".