25026642 has 12 divisors (see below), whose sum is σ = 54224430. Its totient is φ = 8342208.

The previous prime is 25026637. The next prime is 25026643. The reversal of 25026642 is 24662052.

It can be written as a sum of positive squares in only one way, i.e., 25010001 + 16641 = 5001^2 + 129^2 .

It is not an unprimeable number, because it can be changed into a prime (25026643) by changing a digit.

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, 695167 + ... + 695202.

Almost surely, 2^25026642 is an apocalyptic number.

25026642 is an abundant number, since it is smaller than the sum of its proper divisors (29197788).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25026642 is a wasteful number, since it uses less digits than its factorization.

25026642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1390377 (or 1390374 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 25026642 is about 5002.6634905818. The cubic root of 25026642 is about 292.5056058536.

Adding to 25026642 its reverse (24662052), we get a palindrome (49688694).

The spelling of 25026642 in words is "twenty-five million, twenty-six thousand, six hundred forty-two".