25440411523 has 2 divisors, whose sum is σ = 25440411524. Its totient is φ = 25440411522.

The previous prime is 25440411509. The next prime is 25440411541. The reversal of 25440411523 is 32511404452.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25440411523 - 2⁹ = 25440411011 is a prime.

It is not a weakly prime, because it can be changed into another prime (25440417523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12720205761 + 12720205762.

It is an arithmetic number, because the mean of its divisors is an integer number (12720205762).

Almost surely, 2^25440411523 is an apocalyptic number.

25440411523 is a deficient number, since it is larger than the sum of its proper divisors (1).

25440411523 is an equidigital number, since it uses as much as digits as its factorization.

25440411523 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 19200, while the sum is 31.

Adding to 25440411523 its reverse (32511404452), we get a palindrome (57951815975).

The spelling of 25440411523 in words is "twenty-five billion, four hundred forty million, four hundred eleven thousand, five hundred twenty-three".