25344857 has 2 divisors, whose sum is σ = 25344858. Its totient is φ = 25344856.

The previous prime is 25344853. The next prime is 25344871. The reversal of 25344857 is 75844352.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13366336 + 11978521 = 3656^2 + 3461^2 .

It is a cyclic number.

It is not a de Polignac number, because 25344857 - 2² = 25344853 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 25344857.

It is not a weakly prime, because it can be changed into another prime (25344853) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12672428 + 12672429.

It is an arithmetic number, because the mean of its divisors is an integer number (12672429).

Almost surely, 2^25344857 is an apocalyptic number.

It is an amenable number.

25344857 is a deficient number, since it is larger than the sum of its proper divisors (1).

25344857 is an equidigital number, since it uses as much as digits as its factorization.

25344857 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 134400, while the sum is 38.

The square root of 25344857 is about 5034.3675868971. The cubic root of 25344857 is about 293.7401293198.

The spelling of 25344857 in words is "twenty-five million, three hundred forty-four thousand, eight hundred fifty-seven".