25097920357 has 2 divisors, whose sum is σ = 25097920358. Its totient is φ = 25097920356.

The previous prime is 25097920339. The next prime is 25097920387. The reversal of 25097920357 is 75302979052.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14749130916 + 10348789441 = 121446^2 + 101729^2 .

It is a cyclic number.

It is not a de Polignac number, because 25097920357 - 2¹⁵ = 25097887589 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 25097920357.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25097920387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12548960178 + 12548960179.

It is an arithmetic number, because the mean of its divisors is an integer number (12548960179).

Almost surely, 2^25097920357 is an apocalyptic number.

It is an amenable number.

25097920357 is a deficient number, since it is larger than the sum of its proper divisors (1).

25097920357 is an equidigital number, since it uses as much as digits as its factorization.

25097920357 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1190700, while the sum is 49.

The spelling of 25097920357 in words is "twenty-five billion, ninety-seven million, nine hundred twenty thousand, three hundred fifty-seven".