25728475 has 6 divisors (see below), whose sum is σ = 31903340. Its totient is φ = 20582760.

The previous prime is 25728457. The next prime is 25728487. The reversal of 25728475 is 57482752.

It is a happy number.

It is not a de Polignac number, because 25728475 - 2⁷ = 25728347 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 514545 + ... + 514594.

Almost surely, 2^25728475 is an apocalyptic number.

25728475 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

25728475 is a deficient number, since it is larger than the sum of its proper divisors (6174865).

25728475 is a wasteful number, since it uses less digits than its factorization.

25728475 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1029149 (or 1029144 counting only the distinct ones).

The product of its digits is 156800, while the sum is 40.

The square root of 25728475 is about 5072.3244178581. The cubic root of 25728475 is about 295.2147244499.

The spelling of 25728475 in words is "twenty-five million, seven hundred twenty-eight thousand, four hundred seventy-five".