25534631 has 2 divisors, whose sum is σ = 25534632. Its totient is φ = 25534630.

The previous prime is 25534603. The next prime is 25534693. The reversal of 25534631 is 13643552.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25534631 - 2⁶ = 25534567 is a prime.

It is a super-2 number, since 2×25534631² = 1304034760612322, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 25534594 and 25534603.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25534931) 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, 12767315 + 12767316.

It is an arithmetic number, because the mean of its divisors is an integer number (12767316).

Almost surely, 2^25534631 is an apocalyptic number.

25534631 is a deficient number, since it is larger than the sum of its proper divisors (1).

25534631 is an equidigital number, since it uses as much as digits as its factorization.

25534631 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10800, while the sum is 29.

The square root of 25534631 is about 5053.1802857211. The cubic root of 25534631 is about 294.4714503875.

The spelling of 25534631 in words is "twenty-five million, five hundred thirty-four thousand, six hundred thirty-one".