25515054160042 has 16 divisors (see below), whose sum is σ = 40525056429192. Its totient is φ = 12006744494080.

The previous prime is 25515054160039. The next prime is 25515054160147. The reversal of 25515054160042 is 24006145051552.

It can be written as a sum of positive squares in 4 ways, for example, as 23285942453601 + 2229111706441 = 4825551^2 + 1493021^2 .

It is a junction number, because it is equal to n+sod(n) for n = 25515054159977 and 25515054160004.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9398209 + ... + 11804932.

Almost surely, 2^{25515054160042} is an apocalyptic number.

25515054160042 is a deficient number, since it is larger than the sum of its proper divisors (15010002269150).

25515054160042 is a wasteful number, since it uses less digits than its factorization.

25515054160042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21238553.

The product of its (nonzero) digits is 240000, while the sum is 40.

The spelling of 25515054160042 in words is "twenty-five trillion, five hundred fifteen billion, fifty-four million, one hundred sixty thousand, forty-two".