25896864 has 96 divisors (see below), whose sum is σ = 78744960. Its totient is φ = 7299072.

The previous prime is 25896863. The next prime is 25896869. The reversal of 25896864 is 46869852.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25896863) 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 in 15 ways as a sum of consecutive naturals, for example, 59592 + ... + 60024.

It is an arithmetic number, because the mean of its divisors is an integer number (820260).

Almost surely, 2^25896864 is an apocalyptic number.

25896864 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25896864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39372480).

25896864 is an abundant number, since it is smaller than the sum of its proper divisors (52848096).

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

25896864 is a wasteful number, since it uses less digits than its factorization.

25896864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 542 (or 534 counting only the distinct ones).

The product of its digits is 829440, while the sum is 48.

The square root of 25896864 is about 5088.8961474960. The cubic root of 25896864 is about 295.8573698030.

It can be divided in two parts, 2589 and 6864, that added together give a triangular number (9453 = T₁₃₇).

The spelling of 25896864 in words is "twenty-five million, eight hundred ninety-six thousand, eight hundred sixty-four".