25553025552805 has 16 divisors (see below), whose sum is σ = 32467522117104. Its totient is φ = 19239837137920.

The previous prime is 25553025552797. The next prime is 25553025552811. The reversal of 25553025552805 is 50825552035552.

It can be written as a sum of positive squares in 8 ways, for example, as 2023133572161 + 23529891980644 = 1422369^2 + 4850762^2 .

It is not a de Polignac number, because 25553025552805 - 2³ = 25553025552797 is a prime.

It is a super-2 number, since 2×25553025552805² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22638135 + ... + 23740075.

It is an arithmetic number, because the mean of its divisors is an integer number (2029220132319).

Almost surely, 2^{25553025552805} is an apocalyptic number.

It is an amenable number.

25553025552805 is a deficient number, since it is larger than the sum of its proper divisors (6914496564299).

25553025552805 is a wasteful number, since it uses less digits than its factorization.

25553025552805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1374776.

The product of its (nonzero) digits is 15000000, while the sum is 52.

The spelling of 25553025552805 in words is "twenty-five trillion, five hundred fifty-three billion, twenty-five million, five hundred fifty-two thousand, eight hundred five".