25414447 has 2 divisors, whose sum is σ = 25414448. Its totient is φ = 25414446.

The previous prime is 25414429. The next prime is 25414453. The reversal of 25414447 is 74441452.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25414447 - 2¹⁵ = 25381679 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25415447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12707223 + 12707224.

It is an arithmetic number, because the mean of its divisors is an integer number (12707224).

Almost surely, 2^25414447 is an apocalyptic number.

25414447 is a deficient number, since it is larger than the sum of its proper divisors (1).

25414447 is an equidigital number, since it uses as much as digits as its factorization.

25414447 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17920, while the sum is 31.

The square root of 25414447 is about 5041.2743428621. The cubic root of 25414447 is about 294.0087268146.

Adding to 25414447 its reverse (74441452), we get a palindrome (99855899).

The spelling of 25414447 in words is "twenty-five million, four hundred fourteen thousand, four hundred forty-seven".