25506356261612 has 6 divisors (see below), whose sum is σ = 44636123457828. Its totient is φ = 12753178130804.

The previous prime is 25506356261611. The next prime is 25506356261647. The reversal of 25506356261612 is 21616265360552.

It is not an unprimeable number, because it can be changed into a prime (25506356261611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3188294532698 + ... + 3188294532705.

It is an arithmetic number, because the mean of its divisors is an integer number (7439353909638).

Almost surely, 2^{25506356261612} is an apocalyptic number.

It is an amenable number.

25506356261612 is a deficient number, since it is larger than the sum of its proper divisors (19129767196216).

25506356261612 is a wasteful number, since it uses less digits than its factorization.

25506356261612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6376589065407 (or 6376589065405 counting only the distinct ones).

The product of its (nonzero) digits is 3888000, while the sum is 50.

The spelling of 25506356261612 in words is "twenty-five trillion, five hundred six billion, three hundred fifty-six million, two hundred sixty-one thousand, six hundred twelve".