25213523550205 has 8 divisors (see below), whose sum is σ = 30256255466712. Its totient is φ = 20170800702528.

The previous prime is 25213523550179. The next prime is 25213523550239. The reversal of 25213523550205 is 50205532531252.

It can be written as a sum of positive squares in 4 ways, for example, as 14180669712729 + 11032853837476 = 3765723^2 + 3321574^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 25213523550205 - 2⁷ = 25213523550077 is a prime.

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 7 ways as a sum of consecutive naturals, for example, 8484927 + ... + 11064403.

It is an arithmetic number, because the mean of its divisors is an integer number (3782031933339).

Almost surely, 2^{25213523550205} is an apocalyptic number.

It is an amenable number.

25213523550205 is a deficient number, since it is larger than the sum of its proper divisors (5042731916507).

25213523550205 is a wasteful number, since it uses less digits than its factorization.

25213523550205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4534415.

The product of its (nonzero) digits is 450000, while the sum is 40.

The spelling of 25213523550205 in words is "twenty-five trillion, two hundred thirteen billion, five hundred twenty-three million, five hundred fifty thousand, two hundred five".