25478783 has 8 divisors (see below), whose sum is σ = 27917136. Its totient is φ = 23060800.

The previous prime is 25478777. The next prime is 25478797. The reversal of 25478783 is 38787452.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 25478783 - 2¹⁰ = 25477759 is a prime.

It is a super-2 number, since 2×25478783² = 1298336766322178, which contains 22 as substring.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25478083) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2408 + ... + 7533.

It is an arithmetic number, because the mean of its divisors is an integer number (3489642).

Almost surely, 2^25478783 is an apocalyptic number.

25478783 is a deficient number, since it is larger than the sum of its proper divisors (2438353).

25478783 is a wasteful number, since it uses less digits than its factorization.

25478783 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10185.

The product of its digits is 376320, while the sum is 44.

The square root of 25478783 is about 5047.6512359710. The cubic root of 25478783 is about 294.2566095329.

The spelling of 25478783 in words is "twenty-five million, four hundred seventy-eight thousand, seven hundred eighty-three".