25212215235563 has 2 divisors, whose sum is σ = 25212215235564. Its totient is φ = 25212215235562.

The previous prime is 25212215235551. The next prime is 25212215235629. The reversal of 25212215235563 is 36553251221252.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25212215235563 - 2⁴ = 25212215235547 is a prime.

It is not a weakly prime, because it can be changed into another prime (25212215235503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12606107617781 + 12606107617782.

It is an arithmetic number, because the mean of its divisors is an integer number (12606107617782).

Almost surely, 2^{25212215235563} is an apocalyptic number.

25212215235563 is a deficient number, since it is larger than the sum of its proper divisors (1).

25212215235563 is an equidigital number, since it uses as much as digits as its factorization.

25212215235563 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1080000, while the sum is 44.

The spelling of 25212215235563 in words is "twenty-five trillion, two hundred twelve billion, two hundred fifteen million, two hundred thirty-five thousand, five hundred sixty-three".