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25025 = 5271113

25025 has 24 divisors (see below), whose sum is σ = 41664. Its totient is φ = 14400.

The previous prime is 25013. The next prime is 25031. The reversal of 25025 is 52052.

It is not a de Polignac number, because 25025 - 210 = 24001 is a prime.

It is a Curzon number.

It is a nialpdrome in base 13.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1919 + ... + 1931.

It is an arithmetic number, because the mean of its divisors is an integer number (1736).

225025 is an apocalyptic number.

25025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25025 is a deficient number, since it is larger than the sum of its proper divisors (16639).

25025 is a wasteful number, since it uses less digits than its factorization.

25025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41 (or 36 counting only the distinct ones).

The product of its (nonzero) digits is 100, while the sum is 14.

The square root of 25025 is about 158.1929201956. The cubic root of 25025 is about 29.2499208608.

Adding to 25025 its reverse (52052), we get a palindrome (77077).

The spelling of 25025 in words is "twenty-five thousand, twenty-five".