25280500957 has 2 divisors, whose sum is σ = 25280500958. Its totient is φ = 25280500956.

The previous prime is 25280500951. The next prime is 25280500969. The reversal of 25280500957 is 75900508252.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15953963481 + 9326537476 = 126309^2 + 96574^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25280500957 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25280500951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12640250478 + 12640250479.

It is an arithmetic number, because the mean of its divisors is an integer number (12640250479).

Almost surely, 2^25280500957 is an apocalyptic number.

It is an amenable number.

25280500957 is a deficient number, since it is larger than the sum of its proper divisors (1).

25280500957 is an equidigital number, since it uses as much as digits as its factorization.

25280500957 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 252000, while the sum is 43.

The spelling of 25280500957 in words is "twenty-five billion, two hundred eighty million, five hundred thousand, nine hundred fifty-seven".