25320020 has 48 divisors (see below), whose sum is σ = 58859136. Its totient is φ = 9072000.

The previous prime is 25320013. The next prime is 25320041. The reversal of 25320020 is 2002352.

25320020 is nontrivially palindromic in base 12.

It is a super-2 number, since 2×25320020² = 1282206825600800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 25319977 and 25320004.

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, 14810 + ... + 16430.

It is an arithmetic number, because the mean of its divisors is an integer number (1226232).

Almost surely, 2^25320020 is an apocalyptic number.

25320020 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 25320020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29429568).

25320020 is an abundant number, since it is smaller than the sum of its proper divisors (33539116).

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

25320020 is a wasteful number, since it uses less digits than its factorization.

25320020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1712 (or 1710 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 14.

The square root of 25320020 is about 5031.9002374848. The cubic root of 25320020 is about 293.6441465590.

Adding to 25320020 its reverse (2002352), we get a palindrome (27322372).

The spelling of 25320020 in words is "twenty-five million, three hundred twenty thousand, twenty".