25534567 has 2 divisors, whose sum is σ = 25534568. Its totient is φ = 25534566.

The previous prime is 25534559. The next prime is 25534573. The reversal of 25534567 is 76543552.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25534567 - 2³ = 25534559 is a prime.

It is a super-2 number, since 2×25534567² = 1304028223754978, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25534547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12767283 + 12767284.

It is an arithmetic number, because the mean of its divisors is an integer number (12767284).

Almost surely, 2^25534567 is an apocalyptic number.

25534567 is a deficient number, since it is larger than the sum of its proper divisors (1).

25534567 is an equidigital number, since it uses as much as digits as its factorization.

25534567 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 126000, while the sum is 37.

The square root of 25534567 is about 5053.1739530715. The cubic root of 25534567 is about 294.4712043662.

The spelling of 25534567 in words is "twenty-five million, five hundred thirty-four thousand, five hundred sixty-seven".