25480020 has 24 divisors (see below), whose sum is σ = 71344224. Its totient is φ = 6794656.

The previous prime is 25479967. The next prime is 25480027. The reversal of 25480020 is 2008452.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25480027) 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 7 ways as a sum of consecutive naturals, for example, 212274 + ... + 212393.

It is an arithmetic number, because the mean of its divisors is an integer number (2972676).

Almost surely, 2^25480020 is an apocalyptic number.

25480020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25480020 is an abundant number, since it is smaller than the sum of its proper divisors (45864204).

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

25480020 is a wasteful number, since it uses less digits than its factorization.

25480020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 424679 (or 424677 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 21.

The square root of 25480020 is about 5047.7737667213. The cubic root of 25480020 is about 294.2613715283.

Adding to 25480020 its reverse (2008452), we get a palindrome (27488472).

The spelling of 25480020 in words is "twenty-five million, four hundred eighty thousand, twenty".