25436022434 has 8 divisors (see below), whose sum is σ = 38190339408. Its totient is φ = 12705909300.

The previous prime is 25436022419. The next prime is 25436022439. The reversal of 25436022434 is 43422063452.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 25436022394 and 25436022403.

It is not an unprimeable number, because it can be changed into a prime (25436022439) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6048332 + ... + 6052535.

It is an arithmetic number, because the mean of its divisors is an integer number (4773792426).

Almost surely, 2^25436022434 is an apocalyptic number.

25436022434 is a deficient number, since it is larger than the sum of its proper divisors (12754316974).

25436022434 is a wasteful number, since it uses less digits than its factorization.

25436022434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12101920.

The product of its (nonzero) digits is 138240, while the sum is 35.

Adding to 25436022434 its reverse (43422063452), we get a palindrome (68858085886).

The spelling of 25436022434 in words is "twenty-five billion, four hundred thirty-six million, twenty-two thousand, four hundred thirty-four".