25261536 has 48 divisors (see below), whose sum is σ = 66624768. Its totient is φ = 8380800.

The previous prime is 25261501. The next prime is 25261543. The reversal of 25261536 is 63516252.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 25531 + ... + 26501.

It is an arithmetic number, because the mean of its divisors is an integer number (1388016).

Almost surely, 2^25261536 is an apocalyptic number.

It is an amenable number.

25261536 is an abundant number, since it is smaller than the sum of its proper divisors (41363232).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25261536 is a wasteful number, since it uses less digits than its factorization.

25261536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1255 (or 1247 counting only the distinct ones).

The product of its digits is 10800, while the sum is 30.

The square root of 25261536 is about 5026.0855543852. The cubic root of 25261536 is about 293.4178865527.

Adding to 25261536 its reverse (63516252), we get a palindrome (88777788).

The spelling of 25261536 in words is "twenty-five million, two hundred sixty-one thousand, five hundred thirty-six".