3121145025 has 24 divisors (see below), whose sum is σ = 5161901760. Its totient is φ = 1664091840.

The previous prime is 3121144993. The next prime is 3121145033. The reversal of 3121145025 is 5205411213.

It is a happy number.

It is not a de Polignac number, because 3121145025 - 2⁵ = 3121144993 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 3121144986 and 3121145004.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 432396 + ... + 439554.

It is an arithmetic number, because the mean of its divisors is an integer number (215079240).

Almost surely, 2^3121145025 is an apocalyptic number.

It is an amenable number.

3121145025 is a deficient number, since it is larger than the sum of its proper divisors (2040756735).

3121145025 is a wasteful number, since it uses less digits than its factorization.

3121145025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12985 (or 12980 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 24.

The square root of 3121145025 is about 55867.2088527787. The cubic root of 3121145025 is about 1461.4074475874.

Adding to 3121145025 its reverse (5205411213), we get a palindrome (8326556238).

The spelling of 3121145025 in words is "three billion, one hundred twenty-one million, one hundred forty-five thousand, twenty-five".