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25475 = 521019

25475 has 6 divisors (see below), whose sum is σ = 31620. Its totient is φ = 20360.

The previous prime is 25471. The next prime is 25523. The reversal of 25475 is 57452.

It is not a de Polignac number, because 25475 - 22 = 25471 is a prime.

It is a plaindrome in base 12.

It is a zygodrome in base 2.

It is a self number, because there is not a number n which added to its sum of digits gives 25475.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 25475.

It is not an unprimeable number, because it can be changed into a prime (25471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 485 + ... + 534.

It is an arithmetic number, because the mean of its divisors is an integer number (5270).

225475 is an apocalyptic number.

25475 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

25475 is a deficient number, since it is larger than the sum of its proper divisors (6145).

25475 is a wasteful number, since it uses less digits than its factorization.

25475 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1029 (or 1024 counting only the distinct ones).

The product of its digits is 1400, while the sum is 23.

The square root of 25475 is about 159.6088969951. The cubic root of 25475 is about 29.4242045417.

Subtracting from 25475 its sum of digits (23), we obtain a palindrome (25452).

It can be divided in two parts, 2547 and 5, that added together give a palindrome (2552).

The spelling of 25475 in words is "twenty-five thousand, four hundred seventy-five".

Divisors: 1 5 25 1019 5095 25475