25642125 has 48 divisors (see below), whose sum is σ = 48282624. Its totient is φ = 13068000.

The previous prime is 25642117. The next prime is 25642129. The reversal of 25642125 is 52124652.

25642125 is a `hidden beast` number, since 2 + 5 + 642 + 12 + 5 = 666.

It is not a de Polignac number, because 25642125 - 2³ = 25642117 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25642129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 25380 + ... + 26370.

It is an arithmetic number, because the mean of its divisors is an integer number (1005888).

Almost surely, 2^25642125 is an apocalyptic number.

25642125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25642125 is a deficient number, since it is larger than the sum of its proper divisors (22640499).

25642125 is a wasteful number, since it uses less digits than its factorization.

25642125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1035 (or 1022 counting only the distinct ones).

The product of its digits is 4800, while the sum is 27.

The square root of 25642125 is about 5063.8053872557. The cubic root of 25642125 is about 294.8840873731.

Adding to 25642125 its reverse (52124652), we get a palindrome (77766777).

The spelling of 25642125 in words is "twenty-five million, six hundred forty-two thousand, one hundred twenty-five".