25410420533 has 2 divisors, whose sum is σ = 25410420534. Its totient is φ = 25410420532.

The previous prime is 25410420491. The next prime is 25410420589. The reversal of 25410420533 is 33502401452.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24573070564 + 837349969 = 156758^2 + 28937^2 .

It is a cyclic number.

It is not a de Polignac number, because 25410420533 - 2³⁴ = 8230551349 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 25410420496 and 25410420505.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25410420593) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12705210266 + 12705210267.

It is an arithmetic number, because the mean of its divisors is an integer number (12705210267).

Almost surely, 2^25410420533 is an apocalyptic number.

It is an amenable number.

25410420533 is a deficient number, since it is larger than the sum of its proper divisors (1).

25410420533 is an equidigital number, since it uses as much as digits as its factorization.

25410420533 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14400, while the sum is 29.

Adding to 25410420533 its reverse (33502401452), we get a palindrome (58912821985).

The spelling of 25410420533 in words is "twenty-five billion, four hundred ten million, four hundred twenty thousand, five hundred thirty-three".