25155197 has 2 divisors, whose sum is σ = 25155198. Its totient is φ = 25155196.

The previous prime is 25155191. The next prime is 25155203. The reversal of 25155197 is 79155152.

It is a balanced prime because it is at equal distance from previous prime (25155191) and next prime (25155203).

It can be written as a sum of positive squares in only one way, i.e., 24492601 + 662596 = 4949^2 + 814^2 .

It is a cyclic number.

It is not a de Polignac number, because 25155197 - 2¹⁶ = 25089661 is a prime.

It is a super-2 number, since 2×25155197² = 1265567872217618, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25155191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12577598 + 12577599.

It is an arithmetic number, because the mean of its divisors is an integer number (12577599).

Almost surely, 2^25155197 is an apocalyptic number.

It is an amenable number.

25155197 is a deficient number, since it is larger than the sum of its proper divisors (1).

25155197 is an equidigital number, since it uses as much as digits as its factorization.

25155197 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15750, while the sum is 35.

The square root of 25155197 is about 5015.4956883642. The cubic root of 25155197 is about 293.0055911058.

It can be divided in two parts, 25155 and 197, that added together give a palindrome (25352).

The spelling of 25155197 in words is "twenty-five million, one hundred fifty-five thousand, one hundred ninety-seven".