25430105 has 4 divisors (see below), whose sum is σ = 30516132. Its totient is φ = 20344080.

The previous prime is 25430101. The next prime is 25430117. The reversal of 25430105 is 50103452.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 17707264 + 7722841 = 4208^2 + 2779^2 .

It is not a de Polignac number, because 25430105 - 2² = 25430101 is a prime.

It is a super-2 number, since 2×25430105² = 1293380480622050, which contains 22 as substring.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25430101) 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, 2543006 + ... + 2543015.

It is an arithmetic number, because the mean of its divisors is an integer number (7629033).

Almost surely, 2^25430105 is an apocalyptic number.

It is an amenable number.

25430105 is a deficient number, since it is larger than the sum of its proper divisors (5086027).

25430105 is an equidigital number, since it uses as much as digits as its factorization.

25430105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5086026.

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

The square root of 25430105 is about 5042.8270840869. The cubic root of 25430105 is about 294.0690946247.

Adding to 25430105 its reverse (50103452), we get a palindrome (75533557).

The spelling of 25430105 in words is "twenty-five million, four hundred thirty thousand, one hundred five".