25623797 has 2 divisors, whose sum is σ = 25623798. Its totient is φ = 25623796.

The previous prime is 25623781. The next prime is 25623821. The reversal of 25623797 is 79732652.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21659716 + 3964081 = 4654^2 + 1991^2 .

It is a cyclic number.

It is not a de Polignac number, because 25623797 - 2⁴ = 25623781 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25623707) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12811898 + 12811899.

It is an arithmetic number, because the mean of its divisors is an integer number (12811899).

Almost surely, 2^25623797 is an apocalyptic number.

It is an amenable number.

25623797 is a deficient number, since it is larger than the sum of its proper divisors (1).

25623797 is an equidigital number, since it uses as much as digits as its factorization.

25623797 is an evil number, because the sum of its binary digits is even.

The product of its digits is 158760, while the sum is 41.

The square root of 25623797 is about 5061.9953575641. The cubic root of 25623797 is about 294.8138133775.

The spelling of 25623797 in words is "twenty-five million, six hundred twenty-three thousand, seven hundred ninety-seven".