25130435506 has 16 divisors (see below), whose sum is σ = 41293172448. Its totient is φ = 11375524800.

The previous prime is 25130435503. The next prime is 25130435527. The reversal of 25130435506 is 60553403152.

It is not an unprimeable number, because it can be changed into a prime (25130435501) by changing a digit.

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, 2364600 + ... + 2375203.

It is an arithmetic number, because the mean of its divisors is an integer number (2580823278).

Almost surely, 2^25130435506 is an apocalyptic number.

25130435506 is a deficient number, since it is larger than the sum of its proper divisors (16162736942).

25130435506 is a wasteful number, since it uses less digits than its factorization.

25130435506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4740057.

The product of its (nonzero) digits is 54000, while the sum is 34.

Adding to 25130435506 its reverse (60553403152), we get a palindrome (85683838658).

The spelling of 25130435506 in words is "twenty-five billion, one hundred thirty million, four hundred thirty-five thousand, five hundred six".