25355542415213 has 4 divisors (see below), whose sum is σ = 25380974254140. Its totient is φ = 25330110576288.

The previous prime is 25355542415209. The next prime is 25355542415251. The reversal of 25355542415213 is 31251424555352.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 12616796352169 + 12738746063044 = 3552013^2 + 3569138^2 .

It is a cyclic number.

It is not a de Polignac number, because 25355542415213 - 2² = 25355542415209 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25355542445213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12715917968 + ... + 12715919961.

It is an arithmetic number, because the mean of its divisors is an integer number (6345243563535).

Almost surely, 2^{25355542415213} is an apocalyptic number.

It is an amenable number.

25355542415213 is a deficient number, since it is larger than the sum of its proper divisors (25431838927).

25355542415213 is an equidigital number, since it uses as much as digits as its factorization.

25355542415213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25431838926.

The product of its digits is 3600000, while the sum is 47.

The spelling of 25355542415213 in words is "twenty-five trillion, three hundred fifty-five billion, five hundred forty-two million, four hundred fifteen thousand, two hundred thirteen".