25215144623 has 2 divisors, whose sum is σ = 25215144624. Its totient is φ = 25215144622.

The previous prime is 25215144569. The next prime is 25215144641. The reversal of 25215144623 is 32644151252.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25215144623 - 2²² = 25210950319 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25215144673) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12607572311 + 12607572312.

It is an arithmetic number, because the mean of its divisors is an integer number (12607572312).

Almost surely, 2^25215144623 is an apocalyptic number.

25215144623 is a deficient number, since it is larger than the sum of its proper divisors (1).

25215144623 is an equidigital number, since it uses as much as digits as its factorization.

25215144623 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 57600, while the sum is 35.

Adding to 25215144623 its reverse (32644151252), we get a palindrome (57859295875).

The spelling of 25215144623 in words is "twenty-five billion, two hundred fifteen million, one hundred forty-four thousand, six hundred twenty-three".