25641042 has 16 divisors (see below), whose sum is σ = 58608192. Its totient is φ = 7326000.

The previous prime is 25640983. The next prime is 25641047. The reversal of 25641042 is 24014652.

It is not an unprimeable number, because it can be changed into a prime (25641047) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 305209 + ... + 305292.

It is an arithmetic number, because the mean of its divisors is an integer number (3663012).

Almost surely, 2^25641042 is an apocalyptic number.

25641042 is an abundant number, since it is smaller than the sum of its proper divisors (32967150).

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

25641042 is a wasteful number, since it uses less digits than its factorization.

25641042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 610513.

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 25641042 is about 5063.6984507374. The cubic root of 25641042 is about 294.8799358196.

Adding to 25641042 its reverse (24014652), we get a palindrome (49655694).

The spelling of 25641042 in words is "twenty-five million, six hundred forty-one thousand, forty-two".