25420412533 has 2 divisors, whose sum is σ = 25420412534. Its totient is φ = 25420412532.

The previous prime is 25420412497. The next prime is 25420412561. The reversal of 25420412533 is 33521402452.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21280390884 + 4140021649 = 145878^2 + 64343^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25420412533 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 25420412495 and 25420412504.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25420412593) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12710206266 + 12710206267.

It is an arithmetic number, because the mean of its divisors is an integer number (12710206267).

Almost surely, 2^25420412533 is an apocalyptic number.

It is an amenable number.

25420412533 is a deficient number, since it is larger than the sum of its proper divisors (1).

25420412533 is an equidigital number, since it uses as much as digits as its factorization.

25420412533 is an odious number, because the sum of its binary digits is odd.

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

Adding to 25420412533 its reverse (33521402452), we get a palindrome (58941814985).

The spelling of 25420412533 in words is "twenty-five billion, four hundred twenty million, four hundred twelve thousand, five hundred thirty-three".