25244146042 has 4 divisors (see below), whose sum is σ = 37866219066. Its totient is φ = 12622073020.

The previous prime is 25244146027. The next prime is 25244146061. The reversal of 25244146042 is 24064144252.

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., 13073864281 + 12170281761 = 114341^2 + 110319^2 .

It is a junction number, because it is equal to n+sod(n) for n = 25244145989 and 25244146007.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6311036509 + ... + 6311036512.

Almost surely, 2^25244146042 is an apocalyptic number.

25244146042 is a deficient number, since it is larger than the sum of its proper divisors (12622073024).

25244146042 is a wasteful number, since it uses less digits than its factorization.

25244146042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12622073023.

The product of its (nonzero) digits is 61440, while the sum is 34.

The spelling of 25244146042 in words is "twenty-five billion, two hundred forty-four million, one hundred forty-six thousand, forty-two".