25722427 has 2 divisors, whose sum is σ = 25722428. Its totient is φ = 25722426.

The previous prime is 25722421. The next prime is 25722443. The reversal of 25722427 is 72422752.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25722427 - 2¹¹ = 25720379 is a prime.

It is not a weakly prime, because it can be changed into another prime (25722421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12861213 + 12861214.

It is an arithmetic number, because the mean of its divisors is an integer number (12861214).

Almost surely, 2^25722427 is an apocalyptic number.

25722427 is a deficient number, since it is larger than the sum of its proper divisors (1).

25722427 is an equidigital number, since it uses as much as digits as its factorization.

25722427 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15680, while the sum is 31.

The square root of 25722427 is about 5071.7282064401. The cubic root of 25722427 is about 295.1915905672.

The spelling of 25722427 in words is "twenty-five million, seven hundred twenty-two thousand, four hundred twenty-seven".