25314520 has 64 divisors (see below), whose sum is σ = 71020800. Its totient is φ = 7889280.

The previous prime is 25314511. The next prime is 25314521. The reversal of 25314520 is 2541352.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 25314491 and 25314500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25314521) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1030 + ... + 7189.

It is an arithmetic number, because the mean of its divisors is an integer number (1109700).

Almost surely, 2^25314520 is an apocalyptic number.

25314520 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 25314520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35510400).

25314520 is an abundant number, since it is smaller than the sum of its proper divisors (45706280).

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

25314520 is a wasteful number, since it uses less digits than its factorization.

25314520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8248 (or 8244 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 25314520 is about 5031.3536945836. The cubic root of 25314520 is about 293.6228832825.

Adding to 25314520 its reverse (2541352), we get a palindrome (27855872).

The spelling of 25314520 in words is "twenty-five million, three hundred fourteen thousand, five hundred twenty".