25130405 has 8 divisors (see below), whose sum is σ = 30207384. Its totient is φ = 20070400.

The previous prime is 25130393. The next prime is 25130419. The reversal of 25130405 is 50403152.

It can be written as a sum of positive squares in 4 ways, for example, as 5354596 + 19775809 = 2314^2 + 4447^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 25130405 - 2²⁰ = 24081829 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 716 + ... + 7125.

It is an arithmetic number, because the mean of its divisors is an integer number (3775923).

Almost surely, 2^25130405 is an apocalyptic number.

It is an amenable number.

25130405 is a deficient number, since it is larger than the sum of its proper divisors (5076979).

25130405 is an equidigital number, since it uses as much as digits as its factorization.

25130405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8487.

The product of its (nonzero) digits is 600, while the sum is 20.

The square root of 25130405 is about 5013.0235387439. The cubic root of 25130405 is about 292.9093010978.

Adding to 25130405 its reverse (50403152), we get a palindrome (75533557).

The spelling of 25130405 in words is "twenty-five million, one hundred thirty thousand, four hundred five".