25303152949 has 2 divisors, whose sum is σ = 25303152950. Its totient is φ = 25303152948.

The previous prime is 25303152943. The next prime is 25303153009. The reversal of 25303152949 is 94925130352.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24946623025 + 356529924 = 157945^2 + 18882^2 .

It is a cyclic number.

It is not a de Polignac number, because 25303152949 - 2⁷ = 25303152821 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25303152943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12651576474 + 12651576475.

It is an arithmetic number, because the mean of its divisors is an integer number (12651576475).

Almost surely, 2^25303152949 is an apocalyptic number.

It is an amenable number.

25303152949 is a deficient number, since it is larger than the sum of its proper divisors (1).

25303152949 is an equidigital number, since it uses as much as digits as its factorization.

25303152949 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 291600, while the sum is 43.

The spelling of 25303152949 in words is "twenty-five billion, three hundred three million, one hundred fifty-two thousand, nine hundred forty-nine".