25671623 has 2 divisors, whose sum is σ = 25671624. Its totient is φ = 25671622.

The previous prime is 25671601. The next prime is 25671629. The reversal of 25671623 is 32617652.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25671623 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 25671623.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25671629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12835811 + 12835812.

It is an arithmetic number, because the mean of its divisors is an integer number (12835812).

Almost surely, 2^25671623 is an apocalyptic number.

25671623 is a deficient number, since it is larger than the sum of its proper divisors (1).

25671623 is an equidigital number, since it uses as much as digits as its factorization.

25671623 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15120, while the sum is 32.

The square root of 25671623 is about 5066.7171817657. The cubic root of 25671623 is about 294.9971195735.

The spelling of 25671623 in words is "twenty-five million, six hundred seventy-one thousand, six hundred twenty-three".