25783479 has 6 divisors (see below), whose sum is σ = 37242816. Its totient is φ = 17188980.

The previous prime is 25783463. The next prime is 25783507. The reversal of 25783479 is 97438752.

25783479 is a `hidden beast` number, since 2 + 578 + 3 + 4 + 79 = 666.

It is not a de Polignac number, because 25783479 - 2⁴ = 25783463 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25785479) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1432407 + ... + 1432424.

It is an arithmetic number, because the mean of its divisors is an integer number (6207136).

Almost surely, 2^25783479 is an apocalyptic number.

25783479 is a deficient number, since it is larger than the sum of its proper divisors (11459337).

25783479 is a wasteful number, since it uses less digits than its factorization.

25783479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2864837 (or 2864834 counting only the distinct ones).

The product of its digits is 423360, while the sum is 45.

The square root of 25783479 is about 5077.7434949001. The cubic root of 25783479 is about 295.4249510942.

It can be divided in two parts, 25783 and 479, that added together give a palindrome (26262).

The spelling of 25783479 in words is "twenty-five million, seven hundred eighty-three thousand, four hundred seventy-nine".