25042420325042 has 4 divisors (see below), whose sum is σ = 37563630487566. Its totient is φ = 12521210162520.

The previous prime is 25042420324931. The next prime is 25042420325053. The reversal of 25042420325042 is 24052302424052.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 17163446408641 + 7878973916401 = 4142879^2 + 2806951^2 .

It is a junction number, because it is equal to n+sod(n) for n = 25042420324993 and 25042420325011.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6260605081259 + ... + 6260605081262.

Almost surely, 2^{25042420325042} is an apocalyptic number.

25042420325042 is a deficient number, since it is larger than the sum of its proper divisors (12521210162524).

25042420325042 is a wasteful number, since it uses less digits than its factorization.

25042420325042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12521210162523.

The product of its (nonzero) digits is 153600, while the sum is 35.

Adding to 25042420325042 its reverse (24052302424052), we get a palindrome (49094722749094).

The spelling of 25042420325042 in words is "twenty-five trillion, forty-two billion, four hundred twenty million, three hundred twenty-five thousand, forty-two".