25313620 has 12 divisors (see below), whose sum is σ = 53158644. Its totient is φ = 10125440.

The previous prime is 25313611. The next prime is 25313621. The reversal of 25313620 is 2631352.

It can be written as a sum of positive squares in 2 ways, for example, as 2617924 + 22695696 = 1618^2 + 4764^2 .

It is a junction number, because it is equal to n+sod(n) for n = 25313591 and 25313600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25313621) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 632821 + ... + 632860.

It is an arithmetic number, because the mean of its divisors is an integer number (4429887).

Almost surely, 2^25313620 is an apocalyptic number.

25313620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25313620 is an abundant number, since it is smaller than the sum of its proper divisors (27845024).

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

25313620 is a wasteful number, since it uses less digits than its factorization.

25313620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1265690 (or 1265688 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 22.

The square root of 25313620 is about 5031.2642546382. The cubic root of 25313620 is about 293.6194035441.

Adding to 25313620 its reverse (2631352), we get a palindrome (27944972).

The spelling of 25313620 in words is "twenty-five million, three hundred thirteen thousand, six hundred twenty".