25454197 has 2 divisors, whose sum is σ = 25454198. Its totient is φ = 25454196.

The previous prime is 25454183. The next prime is 25454201. The reversal of 25454197 is 79145452.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12773476 + 12680721 = 3574^2 + 3561^2 .

It is a cyclic number.

It is not a de Polignac number, because 25454197 - 2¹¹ = 25452149 is a prime.

It is a super-2 number, since 2×25454197² = 1295832289829618, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25454137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12727098 + 12727099.

It is an arithmetic number, because the mean of its divisors is an integer number (12727099).

Almost surely, 2^25454197 is an apocalyptic number.

It is an amenable number.

25454197 is a deficient number, since it is larger than the sum of its proper divisors (1).

25454197 is an equidigital number, since it uses as much as digits as its factorization.

25454197 is an evil number, because the sum of its binary digits is even.

The product of its digits is 50400, while the sum is 37.

The square root of 25454197 is about 5045.2152580440. The cubic root of 25454197 is about 294.1619304781.

It can be divided in two parts, 25454 and 197, that added together give a triangular number (25651 = T₂₂₆).

The spelling of 25454197 in words is "twenty-five million, four hundred fifty-four thousand, one hundred ninety-seven".