4156425 has 108 divisors (see below), whose sum is σ = 9647820. Its totient is φ = 1693440.

The previous prime is 4156417. The next prime is 4156433. The reversal of 4156425 is 5246514.

4156425 is a `hidden beast` number, since 4 + 15 + 642 + 5 = 666.

It is an interprime number because it is at equal distance from previous prime (4156417) and next prime (4156433).

It can be written as a sum of positive squares in 6 ways, for example, as 423801 + 3732624 = 651^2 + 1932^2 .

It is not a de Polignac number, because 4156425 - 2³ = 4156417 is a prime.

It is a Curzon number.

4156425 is a lucky number.

It is an unprimeable number.

It is a polite number, since it can be written in 107 ways as a sum of consecutive naturals, for example, 143311 + ... + 143339.

Almost surely, 2^4156425 is an apocalyptic number.

4156425 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

4156425 is an abundant number, since it is smaller than the sum of its proper divisors (5491395).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4156425 is a wasteful number, since it uses less digits than its factorization.

4156425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72 (or 57 counting only the distinct ones).

The product of its digits is 4800, while the sum is 27.

The square root of 4156425 is about 2038.7312230895. The cubic root of 4156425 is about 160.7829463239.

The spelling of 4156425 in words is "four million, one hundred fifty-six thousand, four hundred twenty-five".