2560156 has 6 divisors (see below), whose sum is σ = 4480280. Its totient is φ = 1280076.

The previous prime is 2560147. The next prime is 2560157. The reversal of 2560156 is 6510652.

It is a self number, because there is not a number n which added to its sum of digits gives 2560156.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2560157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 320016 + ... + 320023.

2^2560156 is an apocalyptic number.

It is an amenable number.

2560156 is a deficient number, since it is larger than the sum of its proper divisors (1920124).

2560156 is a wasteful number, since it uses less digits than its factorization.

2560156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 640043 (or 640041 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 2560156 is about 1600.0487492573. The cubic root of 2560156 is about 136.8008543886.

The spelling of 2560156 in words is "two million, five hundred sixty thousand, one hundred fifty-six".