25405042 has 16 divisors (see below), whose sum is σ = 41291712. Its totient is φ = 11653200.

The previous prime is 25405019. The next prime is 25405043. The reversal of 25405042 is 24050452.

It is not an unprimeable number, because it can be changed into a prime (25405043) 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, 1417 + ... + 7267.

It is an arithmetic number, because the mean of its divisors is an integer number (2580732).

Almost surely, 2^25405042 is an apocalyptic number.

25405042 is a deficient number, since it is larger than the sum of its proper divisors (15886670).

25405042 is a wasteful number, since it uses less digits than its factorization.

25405042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6033.

The product of its (nonzero) digits is 1600, while the sum is 22.

The square root of 25405042 is about 5040.3414566872. The cubic root of 25405042 is about 293.9724548831.

Adding to 25405042 its reverse (24050452), we get a palindrome (49455494).

The spelling of 25405042 in words is "twenty-five million, four hundred five thousand, forty-two".