25603120 has 20 divisors (see below), whose sum is σ = 59527440. Its totient is φ = 10241216.

The previous prime is 25603091. The next prime is 25603121. The reversal of 25603120 is 2130652.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (20).

It is not an unprimeable number, because it can be changed into a prime (25603121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 159940 + ... + 160099.

It is an arithmetic number, because the mean of its divisors is an integer number (2976372).

Almost surely, 2^25603120 is an apocalyptic number.

25603120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25603120 is an abundant number, since it is smaller than the sum of its proper divisors (33924320).

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

25603120 is a wasteful number, since it uses less digits than its factorization.

25603120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 320052 (or 320046 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 25603120 is about 5059.9525689477. The cubic root of 25603120 is about 294.7344925072.

Adding to 25603120 its reverse (2130652), we get a palindrome (27733772).

The spelling of 25603120 in words is "twenty-five million, six hundred three thousand, one hundred twenty".