25401823 has 2 divisors, whose sum is σ = 25401824. Its totient is φ = 25401822.

The previous prime is 25401811. The next prime is 25401829. The reversal of 25401823 is 32810452.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25401823 is a prime.

It is a super-2 number, since 2×25401823² = 1290505223446658, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25401829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12700911 + 12700912.

It is an arithmetic number, because the mean of its divisors is an integer number (12700912).

Almost surely, 2^25401823 is an apocalyptic number.

25401823 is a deficient number, since it is larger than the sum of its proper divisors (1).

25401823 is an equidigital number, since it uses as much as digits as its factorization.

25401823 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 25401823 is about 5040.0221229673. The cubic root of 25401823 is about 293.9600382231.

The spelling of 25401823 in words is "twenty-five million, four hundred one thousand, eight hundred twenty-three".