25001121242 has 16 divisors (see below), whose sum is σ = 38743183872. Its totient is φ = 12087388560.

The previous prime is 25001121227. The next prime is 25001121251. The reversal of 25001121242 is 24212110052.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 89033 + ... + 240684.

It is an arithmetic number, because the mean of its divisors is an integer number (2421448992).

Almost surely, 2^25001121242 is an apocalyptic number.

25001121242 is a deficient number, since it is larger than the sum of its proper divisors (13742062630).

25001121242 is a wasteful number, since it uses less digits than its factorization.

25001121242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 330973.

The product of its (nonzero) digits is 320, while the sum is 20.

Adding to 25001121242 its reverse (24212110052), we get a palindrome (49213231294).

The spelling of 25001121242 in words is "twenty-five billion, one million, one hundred twenty-one thousand, two hundred forty-two".