25015252049 has 2 divisors, whose sum is σ = 25015252050. Its totient is φ = 25015252048.

The previous prime is 25015252043. The next prime is 25015252051. The reversal of 25015252049 is 94025251052.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 24263669824 + 751582225 = 155768^2 + 27415^2 .

It is a cyclic number.

It is not a de Polignac number, because 25015252049 - 2⁴ = 25015252033 is a prime.

Together with 25015252051, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (25015252043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12507626024 + 12507626025.

It is an arithmetic number, because the mean of its divisors is an integer number (12507626025).

Almost surely, 2^25015252049 is an apocalyptic number.

It is an amenable number.

25015252049 is a deficient number, since it is larger than the sum of its proper divisors (1).

25015252049 is an equidigital number, since it uses as much as digits as its factorization.

25015252049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36000, while the sum is 35.

The spelling of 25015252049 in words is "twenty-five billion, fifteen million, two hundred fifty-two thousand, forty-nine".