25506823 has 2 divisors, whose sum is σ = 25506824. Its totient is φ = 25506822.

The previous prime is 25506781. The next prime is 25506841. The reversal of 25506823 is 32860552.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25506823 - 2¹³ = 25498631 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25506323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12753411 + 12753412.

It is an arithmetic number, because the mean of its divisors is an integer number (12753412).

Almost surely, 2^25506823 is an apocalyptic number.

25506823 is a deficient number, since it is larger than the sum of its proper divisors (1).

25506823 is an equidigital number, since it uses as much as digits as its factorization.

25506823 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14400, while the sum is 31.

The square root of 25506823 is about 5050.4280016648. The cubic root of 25506823 is about 294.3645153984.

The spelling of 25506823 in words is "twenty-five million, five hundred six thousand, eight hundred twenty-three".