25190320 has 20 divisors (see below), whose sum is σ = 58567680. Its totient is φ = 10076096.

The previous prime is 25190287. The next prime is 25190353. The reversal of 25190320 is 2309152.

It is an interprime number because it is at equal distance from previous prime (25190287) and next prime (25190353).

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

It is a junction number, because it is equal to n+sod(n) for n = 25190291 and 25190300.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 157360 + ... + 157519.

It is an arithmetic number, because the mean of its divisors is an integer number (2928384).

Almost surely, 2^25190320 is an apocalyptic number.

25190320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25190320 is an abundant number, since it is smaller than the sum of its proper divisors (33377360).

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

25190320 is a wasteful number, since it uses less digits than its factorization.

25190320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 314892 (or 314886 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 22.

The square root of 25190320 is about 5018.9959155194. The cubic root of 25190320 is about 293.1418975897.

Adding to 25190320 its reverse (2309152), we get a palindrome (27499472).

The spelling of 25190320 in words is "twenty-five million, one hundred ninety thousand, three hundred twenty".