25854391 has 2 divisors, whose sum is σ = 25854392. Its totient is φ = 25854390.

The previous prime is 25854373. The next prime is 25854401. The reversal of 25854391 is 19345852.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25854391 - 2¹³ = 25846199 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 25854391.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25854091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12927195 + 12927196.

It is an arithmetic number, because the mean of its divisors is an integer number (12927196).

Almost surely, 2^25854391 is an apocalyptic number.

25854391 is a deficient number, since it is larger than the sum of its proper divisors (1).

25854391 is an equidigital number, since it uses as much as digits as its factorization.

25854391 is an evil number, because the sum of its binary digits is even.

The product of its digits is 43200, while the sum is 37.

The square root of 25854391 is about 5084.7213296306. The cubic root of 25854391 is about 295.6955377749.

The spelling of 25854391 in words is "twenty-five million, eight hundred fifty-four thousand, three hundred ninety-one".