25040344242 has 16 divisors (see below), whose sum is σ = 53026611552. Its totient is φ = 7855794240.

The previous prime is 25040344213. The next prime is 25040344243. The reversal of 25040344242 is 24244304052.

It is not an unprimeable number, because it can be changed into a prime (25040344243) 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, 122746684 + ... + 122746887.

It is an arithmetic number, because the mean of its divisors is an integer number (3314163222).

Almost surely, 2^25040344242 is an apocalyptic number.

25040344242 is an abundant number, since it is smaller than the sum of its proper divisors (27986267310).

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

25040344242 is a wasteful number, since it uses less digits than its factorization.

25040344242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 245493593.

The product of its (nonzero) digits is 30720, while the sum is 30.

Adding to 25040344242 its reverse (24244304052), we get a palindrome (49284648294).

The spelling of 25040344242 in words is "twenty-five billion, forty million, three hundred forty-four thousand, two hundred forty-two".