25389197 has 4 divisors (see below), whose sum is σ = 25399356. Its totient is φ = 25379040.

The previous prime is 25389167. The next prime is 25389227. The reversal of 25389197 is 79198352.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is an interprime number because it is at equal distance from previous prime (25389167) and next prime (25389227).

It can be written as a sum of positive squares in 2 ways, for example, as 12292036 + 13097161 = 3506^2 + 3619^2 .

It is a cyclic number.

It is not a de Polignac number, because 25389197 - 2¹⁰ = 25388173 is a prime.

It is a super-2 number, since 2×25389197² = 1289222648609618, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25389137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1583 + ... + 7299.

It is an arithmetic number, because the mean of its divisors is an integer number (6349839).

Almost surely, 2^25389197 is an apocalyptic number.

It is an amenable number.

25389197 is a deficient number, since it is larger than the sum of its proper divisors (10159).

25389197 is an equidigital number, since it uses as much as digits as its factorization.

25389197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10158.

The product of its digits is 136080, while the sum is 44.

The square root of 25389197 is about 5038.7693934134. The cubic root of 25389197 is about 293.9113257803.

The spelling of 25389197 in words is "twenty-five million, three hundred eighty-nine thousand, one hundred ninety-seven".