25495680 has 192 divisors, whose sum is σ = 94884480. Its totient is φ = 5806080.

The previous prime is 25495643. The next prime is 25495747. The reversal of 25495680 is 8659452.

It is a tau number, because it is divible by the number of its divisors (192).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 93945 + ... + 94215.

It is an arithmetic number, because the mean of its divisors is an integer number (494190).

Almost surely, 2^25495680 is an apocalyptic number.

25495680 is a gapful number since it is divisible by the number (20) 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 25495680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47442240).

25495680 is an abundant number, since it is smaller than the sum of its proper divisors (69388800).

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

25495680 is a wasteful number, since it uses less digits than its factorization.

25495680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 307 (or 288 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 39.

The square root of 25495680 is about 5049.3247073247. The cubic root of 25495680 is about 294.3216434504.

The spelling of 25495680 in words is "twenty-five million, four hundred ninety-five thousand, six hundred eighty".