4156925 has 12 divisors (see below), whose sum is σ = 5458356. Its totient is φ = 3129600.

The previous prime is 4156921. The next prime is 4156937. The reversal of 4156925 is 5296514.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 3481 + 4153444 = 59^2 + 2038^2 .

It is not a de Polignac number, because 4156925 - 2² = 4156921 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4156891 and 4156900.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4156921) 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, 4466 + ... + 5315.

It is an arithmetic number, because the mean of its divisors is an integer number (454863).

Almost surely, 2^4156925 is an apocalyptic number.

It is an amenable number.

4156925 is a deficient number, since it is larger than the sum of its proper divisors (1301431).

4156925 is a wasteful number, since it uses less digits than its factorization.

4156925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9808 (or 9803 counting only the distinct ones).

The product of its digits is 10800, while the sum is 32.

The square root of 4156925 is about 2038.8538446882. The cubic root of 4156925 is about 160.7893932304.

The spelling of 4156925 in words is "four million, one hundred fifty-six thousand, nine hundred twenty-five".