25120020 has 24 divisors (see below), whose sum is σ = 70336224. Its totient is φ = 6698656.

The previous prime is 25120009. The next prime is 25120021. The reversal of 25120020 is 2002152.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 25119978 and 25120005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25120021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 209274 + ... + 209393.

It is an arithmetic number, because the mean of its divisors is an integer number (2930676).

Almost surely, 2^25120020 is an apocalyptic number.

25120020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25120020 is an abundant number, since it is smaller than the sum of its proper divisors (45216204).

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

25120020 is a wasteful number, since it uses less digits than its factorization.

25120020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 418679 (or 418677 counting only the distinct ones).

The product of its (nonzero) digits is 40, while the sum is 12.

The square root of 25120020 is about 5011.9876296735. The cubic root of 25120020 is about 292.8689478259.

Adding to 25120020 its reverse (2002152), we get a palindrome (27122172).

The spelling of 25120020 in words is "twenty-five million, one hundred twenty thousand, twenty".