25642124 has 6 divisors (see below), whose sum is σ = 44873724. Its totient is φ = 12821060.

The previous prime is 25642117. The next prime is 25642129. The reversal of 25642124 is 42124652.

It is a junction number, because it is equal to n+sod(n) for n = 25642093 and 25642102.

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

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3205262 + ... + 3205269.

It is an arithmetic number, because the mean of its divisors is an integer number (7478954).

Almost surely, 2^25642124 is an apocalyptic number.

It is an amenable number.

25642124 is a deficient number, since it is larger than the sum of its proper divisors (19231600).

25642124 is a wasteful number, since it uses less digits than its factorization.

25642124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6410535 (or 6410533 counting only the distinct ones).

The product of its digits is 3840, while the sum is 26.

The square root of 25642124 is about 5063.8052885157. The cubic root of 25642124 is about 294.8840835398.

Adding to 25642124 its reverse (42124652), we get a palindrome (67766776).

The spelling of 25642124 in words is "twenty-five million, six hundred forty-two thousand, one hundred twenty-four".