25353520 has 20 divisors (see below), whose sum is σ = 58947120. Its totient is φ = 10141376.

The previous prime is 25353499. The next prime is 25353529. The reversal of 25353520 is 2535352.

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 (25353529) 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 3 ways as a sum of consecutive naturals, for example, 158380 + ... + 158539.

It is an arithmetic number, because the mean of its divisors is an integer number (2947356).

Almost surely, 2^25353520 is an apocalyptic number.

25353520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25353520 is an abundant number, since it is smaller than the sum of its proper divisors (33593600).

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

25353520 is a wasteful number, since it uses less digits than its factorization.

25353520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 316932 (or 316926 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 25.

The square root of 25353520 is about 5035.2278995096. The cubic root of 25353520 is about 293.7735927935.

Adding to 25353520 its reverse (2535352), we get a palindrome (27888872).

It can be divided in two parts, 2535 and 3520, that multiplied together give a triangular number (8923200 = T₄₂₂₄).

The spelling of 25353520 in words is "twenty-five million, three hundred fifty-three thousand, five hundred twenty".