25045636142 has 4 divisors (see below), whose sum is σ = 37568454216. Its totient is φ = 12522818070.

The previous prime is 25045636141. The next prime is 25045636177. The reversal of 25045636142 is 24163654052.

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

It is a junction number, because it is equal to n+sod(n) for n = 25045636096 and 25045636105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25045636141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6261409034 + ... + 6261409037.

It is an arithmetic number, because the mean of its divisors is an integer number (9392113554).

Almost surely, 2^25045636142 is an apocalyptic number.

25045636142 is a deficient number, since it is larger than the sum of its proper divisors (12522818074).

25045636142 is a wasteful number, since it uses less digits than its factorization.

25045636142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12522818073.

The product of its (nonzero) digits is 172800, while the sum is 38.

The spelling of 25045636142 in words is "twenty-five billion, forty-five million, six hundred thirty-six thousand, one hundred forty-two".