25997627 has 4 divisors (see below), whose sum is σ = 26550816. Its totient is φ = 25444440.

The previous prime is 25997611. The next prime is 25997633. The reversal of 25997627 is 72679952.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 25997627 - 2⁴ = 25997611 is a prime.

It is a super-2 number, since 2×25997627² = 1351753219262258, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (47), and also a Moran number because the ratio is a prime number: 553141 = 25997627 / (2 + 5 + 9 + 9 + 7 + 6 + 2 + 7).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25997677) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 276524 + ... + 276617.

It is an arithmetic number, because the mean of its divisors is an integer number (6637704).

Almost surely, 2^25997627 is an apocalyptic number.

25997627 is a deficient number, since it is larger than the sum of its proper divisors (553189).

25997627 is an equidigital number, since it uses as much as digits as its factorization.

25997627 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 553188.

The product of its digits is 476280, while the sum is 47.

The square root of 25997627 is about 5098.7868164888. The cubic root of 25997627 is about 296.2405937419.

The spelling of 25997627 in words is "twenty-five million, nine hundred ninety-seven thousand, six hundred twenty-seven".