25506130 has 16 divisors (see below), whose sum is σ = 49442904. Its totient is φ = 9417600.

The previous prime is 25506121. The next prime is 25506157. The reversal of 25506130 is 3160552.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 21967969 + 3538161 = 4687^2 + 1881^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 97971 + ... + 98230.

Almost surely, 2^25506130 is an apocalyptic number.

25506130 is a deficient number, since it is larger than the sum of its proper divisors (23936774).

25506130 is a wasteful number, since it uses less digits than its factorization.

25506130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196221.

The product of its (nonzero) digits is 900, while the sum is 22.

The square root of 25506130 is about 5050.3593931521. The cubic root of 25506130 is about 294.3618494914.

Adding to 25506130 its reverse (3160552), we get a palindrome (28666682).

The spelling of 25506130 in words is "twenty-five million, five hundred six thousand, one hundred thirty".