25122404533 has 2 divisors, whose sum is σ = 25122404534. Its totient is φ = 25122404532.

The previous prime is 25122404521. The next prime is 25122404569. The reversal of 25122404533 is 33540422152.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21416273649 + 3706130884 = 146343^2 + 60878^2 .

It is a cyclic number.

It is not a de Polignac number, because 25122404533 - 2⁵ = 25122404501 is a prime.

It is a super-2 number, since 2×25122404533² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 25122404495 and 25122404504.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25122414533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12561202266 + 12561202267.

It is an arithmetic number, because the mean of its divisors is an integer number (12561202267).

Almost surely, 2^25122404533 is an apocalyptic number.

It is an amenable number.

25122404533 is a deficient number, since it is larger than the sum of its proper divisors (1).

25122404533 is an equidigital number, since it uses as much as digits as its factorization.

25122404533 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 28800, while the sum is 31.

Adding to 25122404533 its reverse (33540422152), we get a palindrome (58662826685).

The spelling of 25122404533 in words is "twenty-five billion, one hundred twenty-two million, four hundred four thousand, five hundred thirty-three".