25535961 has 36 divisors (see below), whose sum is σ = 41081040. Its totient is φ = 15272400.

The previous prime is 25535941. The next prime is 25535963. The reversal of 25535961 is 16953552.

It is not a de Polignac number, because 25535961 - 2⁷ = 25535833 is a prime.

Its product of digits (40500) is a multiple of the sum of its prime divisors (324).

It is not an unprimeable number, because it can be changed into a prime (25535963) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 142570 + ... + 142748.

It is an arithmetic number, because the mean of its divisors is an integer number (1141140).

Almost surely, 2^25535961 is an apocalyptic number.

It is an amenable number.

25535961 is a deficient number, since it is larger than the sum of its proper divisors (15545079).

25535961 is a wasteful number, since it uses less digits than its factorization.

25535961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 338 (or 324 counting only the distinct ones).

The product of its digits is 40500, while the sum is 36.

The square root of 25535961 is about 5053.3118842992. The cubic root of 25535961 is about 294.4765629244.

The spelling of 25535961 in words is "twenty-five million, five hundred thirty-five thousand, nine hundred sixty-one".