25413320 has 16 divisors (see below), whose sum is σ = 57180060. Its totient is φ = 10165312.

The previous prime is 25413307. The next prime is 25413329. The reversal of 25413320 is 2331452.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 21548164 + 3865156 = 4642^2 + 1966^2 .

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 = 25413292 and 25413301.

It is not an unprimeable number, because it can be changed into a prime (25413329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 317627 + ... + 317706.

Almost surely, 2^25413320 is an apocalyptic number.

25413320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25413320 is an abundant number, since it is smaller than the sum of its proper divisors (31766740).

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

25413320 is a wasteful number, since it uses less digits than its factorization.

25413320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 635344 (or 635340 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 25413320 is about 5041.1625643298. The cubic root of 25413320 is about 294.0043808254.

Adding to 25413320 its reverse (2331452), we get a palindrome (27744772).

The spelling of 25413320 in words is "twenty-five million, four hundred thirteen thousand, three hundred twenty".