25119920 has 80 divisors (see below), whose sum is σ = 68947968. Its totient is φ = 8328960.

The previous prime is 25119917. The next prime is 25119937. The reversal of 25119920 is 2991152.

It is a tau number, because it is divible by the number of its divisors (80).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16637 + ... + 18083.

Almost surely, 2^25119920 is an apocalyptic number.

25119920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

25119920 is the 2894-th octagonal number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25119920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34473984).

25119920 is an abundant number, since it is smaller than the sum of its proper divisors (43828048).

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

25119920 is a wasteful number, since it uses less digits than its factorization.

25119920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1498 (or 1492 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 29.

The square root of 25119920 is about 5011.9776535815. The cubic root of 25119920 is about 292.8685591992.

The spelling of 25119920 in words is "twenty-five million, one hundred nineteen thousand, nine hundred twenty".