25358502881 has 2 divisors, whose sum is σ = 25358502882. Its totient is φ = 25358502880.

The previous prime is 25358502797. The next prime is 25358502887. The reversal of 25358502881 is 18820585352.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12817862656 + 12540640225 = 113216^2 + 111985^2 .

It is a cyclic number.

It is not a de Polignac number, because 25358502881 - 2¹⁴ = 25358486497 is a prime.

It is a super-2 number, since 2×25358502881² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (25358502887) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12679251440 + 12679251441.

It is an arithmetic number, because the mean of its divisors is an integer number (12679251441).

Almost surely, 2^25358502881 is an apocalyptic number.

It is an amenable number.

25358502881 is a deficient number, since it is larger than the sum of its proper divisors (1).

25358502881 is an equidigital number, since it uses as much as digits as its factorization.

25358502881 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 768000, while the sum is 47.

The spelling of 25358502881 in words is "twenty-five billion, three hundred fifty-eight million, five hundred two thousand, eight hundred eighty-one".