25305223222142 has 32 divisors (see below), whose sum is σ = 38721255824160. Its totient is φ = 12400360450560.

The previous prime is 25305223222117. The next prime is 25305223222171. The reversal of 25305223222142 is 24122232250352.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 127958234 + ... + 128155842.

It is an arithmetic number, because the mean of its divisors is an integer number (1210039244505).

Almost surely, 2^{25305223222142} is an apocalyptic number.

25305223222142 is a deficient number, since it is larger than the sum of its proper divisors (13416032602018).

25305223222142 is a wasteful number, since it uses less digits than its factorization.

25305223222142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203228.

The product of its (nonzero) digits is 115200, while the sum is 35.

Adding to 25305223222142 its reverse (24122232250352), we get a palindrome (49427455472494).

The spelling of 25305223222142 in words is "twenty-five trillion, three hundred five billion, two hundred twenty-three million, two hundred twenty-two thousand, one hundred forty-two".