25402823 has 2 divisors, whose sum is σ = 25402824. Its totient is φ = 25402822.

The previous prime is 25402771. The next prime is 25402837. The reversal of 25402823 is 32820452.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25402823 - 2¹² = 25398727 is a prime.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 25402792 and 25402801.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25402873) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12701411 + 12701412.

It is an arithmetic number, because the mean of its divisors is an integer number (12701412).

Almost surely, 2^25402823 is an apocalyptic number.

25402823 is a deficient number, since it is larger than the sum of its proper divisors (1).

25402823 is an equidigital number, since it uses as much as digits as its factorization.

25402823 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3840, while the sum is 26.

The square root of 25402823 is about 5040.1213279047. The cubic root of 25402823 is about 293.9638956389.

The spelling of 25402823 in words is "twenty-five million, four hundred two thousand, eight hundred twenty-three".