25312004120 has 64 divisors (see below), whose sum is σ = 61413660000. Its totient is φ = 9333669888.

The previous prime is 25312004119. The next prime is 25312004167. The reversal of 25312004120 is 2140021352.

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 = 25312004092 and 25312004101.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 368231 + ... + 431529.

Almost surely, 2^25312004120 is an apocalyptic number.

25312004120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25312004120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30706830000).

25312004120 is an abundant number, since it is smaller than the sum of its proper divisors (36101655880).

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

25312004120 is a wasteful number, since it uses less digits than its factorization.

25312004120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64092 (or 64088 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

Adding to 25312004120 its reverse (2140021352), we get a palindrome (27452025472).

The spelling of 25312004120 in words is "twenty-five billion, three hundred twelve million, four thousand, one hundred twenty".