25002223613 has 2 divisors, whose sum is σ = 25002223614. Its totient is φ = 25002223612.

The previous prime is 25002223523. The next prime is 25002223621. The reversal of 25002223613 is 31632220052.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 24153200569 + 849023044 = 155413^2 + 29138^2 .

It is a cyclic number.

It is not a de Polignac number, because 25002223613 - 2¹⁰ = 25002222589 is a prime.

It is a super-2 number, since 2×25002223613² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25002243613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12501111806 + 12501111807.

It is an arithmetic number, because the mean of its divisors is an integer number (12501111807).

Almost surely, 2^25002223613 is an apocalyptic number.

It is an amenable number.

25002223613 is a deficient number, since it is larger than the sum of its proper divisors (1).

25002223613 is an equidigital number, since it uses as much as digits as its factorization.

25002223613 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4320, while the sum is 26.

Adding to 25002223613 its reverse (31632220052), we get a palindrome (56634443665).

The spelling of 25002223613 in words is "twenty-five billion, two million, two hundred twenty-three thousand, six hundred thirteen".