25620667 has 2 divisors, whose sum is σ = 25620668. Its totient is φ = 25620666.

The previous prime is 25620641. The next prime is 25620709. The reversal of 25620667 is 76602652.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25620667 is a prime.

It is not a weakly prime, because it can be changed into another prime (25620967) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12810333 + 12810334.

It is an arithmetic number, because the mean of its divisors is an integer number (12810334).

Almost surely, 2^25620667 is an apocalyptic number.

25620667 is a deficient number, since it is larger than the sum of its proper divisors (1).

25620667 is an equidigital number, since it uses as much as digits as its factorization.

25620667 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30240, while the sum is 34.

The square root of 25620667 is about 5061.6861815012. The cubic root of 25620667 is about 294.8018088489.

The spelling of 25620667 in words is "twenty-five million, six hundred twenty thousand, six hundred sixty-seven".