25430506 has 16 divisors (see below), whose sum is σ = 39774240. Its totient is φ = 12179440.

The previous prime is 25430497. The next prime is 25430519. The reversal of 25430506 is 60503452.

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, 5925 + ... + 9271.

It is an arithmetic number, because the mean of its divisors is an integer number (2485890).

Almost surely, 2^25430506 is an apocalyptic number.

25430506 is a deficient number, since it is larger than the sum of its proper divisors (14343734).

25430506 is a wasteful number, since it uses less digits than its factorization.

25430506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3509.

The product of its (nonzero) digits is 3600, while the sum is 25.

The square root of 25430506 is about 5042.8668433739. The cubic root of 25430506 is about 294.0706403135.

Adding to 25430506 its reverse (60503452), we get a palindrome (85933958).

The spelling of 25430506 in words is "twenty-five million, four hundred thirty thousand, five hundred six".