25538742145 has 32 divisors (see below), whose sum is σ = 35245622016. Its totient is φ = 17401977600.

The previous prime is 25538742113. The next prime is 25538742199. The reversal of 25538742145 is 54124783552.

It is not a de Polignac number, because 25538742145 - 2⁵ = 25538742113 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25538742095 and 25538742104.

It is an unprimeable number.

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 in 31 ways as a sum of consecutive naturals, for example, 7313850 + ... + 7317340.

It is an arithmetic number, because the mean of its divisors is an integer number (1101425688).

Almost surely, 2^25538742145 is an apocalyptic number.

It is an amenable number.

25538742145 is a deficient number, since it is larger than the sum of its proper divisors (9706879871).

25538742145 is a wasteful number, since it uses less digits than its factorization.

25538742145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4761.

The product of its digits is 1344000, while the sum is 46.

The spelling of 25538742145 in words is "twenty-five billion, five hundred thirty-eight million, seven hundred forty-two thousand, one hundred forty-five".