25505114242 has 8 divisors (see below), whose sum is σ = 39576901500. Its totient is φ = 12312813744.

The previous prime is 25505114209. The next prime is 25505114279. The reversal of 25505114242 is 24241150552.

It can be written as a sum of positive squares in 2 ways, for example, as 23555803441 + 1949310801 = 153479^2 + 44151^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 219871617 + ... + 219871732.

Almost surely, 2^25505114242 is an apocalyptic number.

25505114242 is a deficient number, since it is larger than the sum of its proper divisors (14071787258).

25505114242 is a wasteful number, since it uses less digits than its factorization.

25505114242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 439743380.

The product of its (nonzero) digits is 16000, while the sum is 31.

Adding to 25505114242 its reverse (24241150552), we get a palindrome (49746264794).

The spelling of 25505114242 in words is "twenty-five billion, five hundred five million, one hundred fourteen thousand, two hundred forty-two".