25354355513 has 2 divisors, whose sum is σ = 25354355514. Its totient is φ = 25354355512.

The previous prime is 25354355503. The next prime is 25354355519. The reversal of 25354355513 is 31555345352.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19095646969 + 6258708544 = 138187^2 + 79112^2 .

It is a cyclic number.

It is not a de Polignac number, because 25354355513 - 2⁶ = 25354355449 is a prime.

It is not a weakly prime, because it can be changed into another prime (25354355519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12677177756 + 12677177757.

It is an arithmetic number, because the mean of its divisors is an integer number (12677177757).

Almost surely, 2^25354355513 is an apocalyptic number.

It is an amenable number.

25354355513 is a deficient number, since it is larger than the sum of its proper divisors (1).

25354355513 is an equidigital number, since it uses as much as digits as its factorization.

25354355513 is an evil number, because the sum of its binary digits is even.

The product of its digits is 675000, while the sum is 41.

The spelling of 25354355513 in words is "twenty-five billion, three hundred fifty-four million, three hundred fifty-five thousand, five hundred thirteen".