25921896 has 192 divisors, whose sum is σ = 88542720. Its totient is φ = 6140160.

The previous prime is 25921891. The next prime is 25921901. The reversal of 25921896 is 69812952.

It is an interprime number because it is at equal distance from previous prime (25921891) and next prime (25921901).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (25921891) 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 47 ways as a sum of consecutive naturals, for example, 312271 + ... + 312353.

It is an arithmetic number, because the mean of its divisors is an integer number (461160).

Almost surely, 2^25921896 is an apocalyptic number.

25921896 is a gapful number since it is divisible by the number (26) 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 25921896, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44271360).

25921896 is an abundant number, since it is smaller than the sum of its proper divisors (62620824).

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

25921896 is a wasteful number, since it uses less digits than its factorization.

25921896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136 (or 119 counting only the distinct ones).

The product of its digits is 77760, while the sum is 42.

The square root of 25921896 is about 5091.3550259238. The cubic root of 25921896 is about 295.9526646976.

It can be divided in two parts, 259 and 21896, that added together give a triangular number (22155 = T₂₁₀).

The spelling of 25921896 in words is "twenty-five million, nine hundred twenty-one thousand, eight hundred ninety-six".