25042105537 has 2 divisors, whose sum is σ = 25042105538. Its totient is φ = 25042105536.

The previous prime is 25042105511. The next prime is 25042105559. The reversal of 25042105537 is 73550124052.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15398079921 + 9644025616 = 124089^2 + 98204^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25042105537 is a prime.

It is not a weakly prime, because it can be changed into another prime (25042105937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12521052768 + 12521052769.

It is an arithmetic number, because the mean of its divisors is an integer number (12521052769).

Almost surely, 2^25042105537 is an apocalyptic number.

It is an amenable number.

25042105537 is a deficient number, since it is larger than the sum of its proper divisors (1).

25042105537 is an equidigital number, since it uses as much as digits as its factorization.

25042105537 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 42000, while the sum is 34.

Adding to 25042105537 its reverse (73550124052), we get a palindrome (98592229589).

The spelling of 25042105537 in words is "twenty-five billion, forty-two million, one hundred five thousand, five hundred thirty-seven".