25097447 has 2 divisors, whose sum is σ = 25097448. Its totient is φ = 25097446.

The previous prime is 25097419. The next prime is 25097459. The reversal of 25097447 is 74479052.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25097447 - 2²² = 20903143 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 25097447.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25097407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12548723 + 12548724.

It is an arithmetic number, because the mean of its divisors is an integer number (12548724).

Almost surely, 2^25097447 is an apocalyptic number.

25097447 is a deficient number, since it is larger than the sum of its proper divisors (1).

25097447 is an equidigital number, since it uses as much as digits as its factorization.

25097447 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 70560, while the sum is 38.

The square root of 25097447 is about 5009.7352225442. The cubic root of 25097447 is about 292.7811969409.

The spelling of 25097447 in words is "twenty-five million, ninety-seven thousand, four hundred forty-seven".