25757197 has 2 divisors, whose sum is σ = 25757198. Its totient is φ = 25757196.

The previous prime is 25757119. The next prime is 25757213. The reversal of 25757197 is 79175752.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21958596 + 3798601 = 4686^2 + 1949^2 .

It is a cyclic number.

It is not a de Polignac number, because 25757197 - 2¹⁵ = 25724429 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25707197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12878598 + 12878599.

It is an arithmetic number, because the mean of its divisors is an integer number (12878599).

Almost surely, 2^25757197 is an apocalyptic number.

It is an amenable number.

25757197 is a deficient number, since it is larger than the sum of its proper divisors (1).

25757197 is an equidigital number, since it uses as much as digits as its factorization.

25757197 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 154350, while the sum is 43.

The square root of 25757197 is about 5075.1548744841. The cubic root of 25757197 is about 295.3245379806.

The spelling of 25757197 in words is "twenty-five million, seven hundred fifty-seven thousand, one hundred ninety-seven".