25255304642 has 8 divisors (see below), whose sum is σ = 37988481600. Its totient is φ = 12592477444.

The previous prime is 25255304639. The next prime is 25255304689. The reversal of 25255304642 is 24640355252.

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 = 25255304596 and 25255304605.

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, 17586542 + ... + 17587977.

It is an arithmetic number, because the mean of its divisors is an integer number (4748560200).

Almost surely, 2^25255304642 is an apocalyptic number.

25255304642 is a deficient number, since it is larger than the sum of its proper divisors (12733176958).

25255304642 is a wasteful number, since it uses less digits than its factorization.

25255304642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35174880.

The product of its (nonzero) digits is 288000, while the sum is 38.

Adding to 25255304642 its reverse (24640355252), we get a palindrome (49895659894).

The spelling of 25255304642 in words is "twenty-five billion, two hundred fifty-five million, three hundred four thousand, six hundred forty-two".