25530671 has 2 divisors, whose sum is σ = 25530672. Its totient is φ = 25530670.

The previous prime is 25530649. The next prime is 25530689. The reversal of 25530671 is 17603552.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25530671 - 2⁶ = 25530607 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25530611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12765335 + 12765336.

It is an arithmetic number, because the mean of its divisors is an integer number (12765336).

Almost surely, 2^25530671 is an apocalyptic number.

25530671 is a deficient number, since it is larger than the sum of its proper divisors (1).

25530671 is an equidigital number, since it uses as much as digits as its factorization.

25530671 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6300, while the sum is 29.

The square root of 25530671 is about 5052.7884380805. The cubic root of 25530671 is about 294.4562270459.

The spelling of 25530671 in words is "twenty-five million, five hundred thirty thousand, six hundred seventy-one".