25432226242 has 8 divisors (see below), whose sum is σ = 39179375676. Its totient is φ = 12372434352.

The previous prime is 25432226227. The next prime is 25432226243. The reversal of 25432226242 is 24262223452.

It can be written as a sum of positive squares in 2 ways, for example, as 25423983601 + 8242641 = 159449^2 + 2871^2 .

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 = 25432226198 and 25432226207.

It is not an unprimeable number, because it can be changed into a prime (25432226243) 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, 171839293 + ... + 171839440.

Almost surely, 2^25432226242 is an apocalyptic number.

25432226242 is a deficient number, since it is larger than the sum of its proper divisors (13747149434).

25432226242 is a wasteful number, since it uses less digits than its factorization.

25432226242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 343678772.

The product of its digits is 92160, while the sum is 34.

Adding to 25432226242 its reverse (24262223452), we get a palindrome (49694449694).

The spelling of 25432226242 in words is "twenty-five billion, four hundred thirty-two million, two hundred twenty-six thousand, two hundred forty-two".