25020440120 has 64 divisors (see below), whose sum is σ = 60649585920. Its totient is φ = 9234791424.

The previous prime is 25020440087. The next prime is 25020440201. The reversal of 25020440120 is 2104402052.

It is a happy number.

It is a super-2 number, since 2×25020440120² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 25020440092 and 25020440101.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1639244 + ... + 1654436.

It is an arithmetic number, because the mean of its divisors is an integer number (947649780).

Almost surely, 2^25020440120 is an apocalyptic number.

25020440120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25020440120 is an abundant number, since it is smaller than the sum of its proper divisors (35629145800).

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

25020440120 is a wasteful number, since it uses less digits than its factorization.

25020440120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18384 (or 18380 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 20.

Adding to 25020440120 its reverse (2104402052), we get a palindrome (27124842172).

The spelling of 25020440120 in words is "twenty-five billion, twenty million, four hundred forty thousand, one hundred twenty".