25507049 has 2 divisors, whose sum is σ = 25507050. Its totient is φ = 25507048.

The previous prime is 25507039. The next prime is 25507051. The reversal of 25507049 is 94070552.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22391824 + 3115225 = 4732^2 + 1765^2 .

It is a cyclic number.

It is not a de Polignac number, because 25507049 - 2⁴ = 25507033 is a prime.

It is a Sophie Germain prime.

Together with 25507051, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (25507019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12753524 + 12753525.

It is an arithmetic number, because the mean of its divisors is an integer number (12753525).

Almost surely, 2^25507049 is an apocalyptic number.

It is an amenable number.

25507049 is a deficient number, since it is larger than the sum of its proper divisors (1).

25507049 is an equidigital number, since it uses as much as digits as its factorization.

25507049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12600, while the sum is 32.

The square root of 25507049 is about 5050.4503759566. The cubic root of 25507049 is about 294.3653847891.

The spelling of 25507049 in words is "twenty-five million, five hundred seven thousand, forty-nine".