25534693 has 2 divisors, whose sum is σ = 25534694. Its totient is φ = 25534692.

The previous prime is 25534631. The next prime is 25534709. The reversal of 25534693 is 39643552.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 24137569 + 1397124 = 4913^2 + 1182^2 .

It is a cyclic number.

It is not a de Polignac number, because 25534693 - 2²¹ = 23437541 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25534603) 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, 12767346 + 12767347.

It is an arithmetic number, because the mean of its divisors is an integer number (12767347).

Almost surely, 2^25534693 is an apocalyptic number.

It is an amenable number.

25534693 is a deficient number, since it is larger than the sum of its proper divisors (1).

25534693 is an equidigital number, since it uses as much as digits as its factorization.

25534693 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 97200, while the sum is 37.

The square root of 25534693 is about 5053.1864204678. The cubic root of 25534693 is about 294.4716887202.

The spelling of 25534693 in words is "twenty-five million, five hundred thirty-four thousand, six hundred ninety-three".