25556423 has 4 divisors (see below), whose sum is σ = 27059760. Its totient is φ = 24053088.

The previous prime is 25556417. The next prime is 25556429. The reversal of 25556423 is 32465552.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (25556417) and next prime (25556429).

It is a cyclic number.

It is not a de Polignac number, because 25556423 - 2⁶ = 25556359 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 25556423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25556429) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 751643 + ... + 751676.

It is an arithmetic number, because the mean of its divisors is an integer number (6764940).

Almost surely, 2^25556423 is an apocalyptic number.

25556423 is a deficient number, since it is larger than the sum of its proper divisors (1503337).

25556423 is a wasteful number, since it uses less digits than its factorization.

25556423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1503336.

The product of its digits is 36000, while the sum is 32.

The square root of 25556423 is about 5055.3360916956. The cubic root of 25556423 is about 294.5551967473. Note that the first 3 decimals are identical.

The spelling of 25556423 in words is "twenty-five million, five hundred fifty-six thousand, four hundred twenty-three".