25142520049 has 2 divisors, whose sum is σ = 25142520050. Its totient is φ = 25142520048.

The previous prime is 25142519993. The next prime is 25142520119. The reversal of 25142520049 is 94002524152.

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., 22615648225 + 2526871824 = 150385^2 + 50268^2 .

It is a cyclic number.

It is not a de Polignac number, because 25142520049 - 2⁷ = 25142519921 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 25142519996 and 25142520023.

It is not a weakly prime, because it can be changed into another prime (25142520649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12571260024 + 12571260025.

It is an arithmetic number, because the mean of its divisors is an integer number (12571260025).

Almost surely, 2^25142520049 is an apocalyptic number.

It is an amenable number.

25142520049 is a deficient number, since it is larger than the sum of its proper divisors (1).

25142520049 is an equidigital number, since it uses as much as digits as its factorization.

25142520049 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 34.

The spelling of 25142520049 in words is "twenty-five billion, one hundred forty-two million, five hundred twenty thousand, forty-nine".