25205210522 has 16 divisors (see below), whose sum is σ = 39487785120. Its totient is φ = 12054161808.

The previous prime is 25205210519. The next prime is 25205210549. The reversal of 25205210522 is 22501250252.

It is a junction number, because it is equal to n+sod(n) for n = 25205210491 and 25205210500.

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, 2882168 + ... + 2890899.

It is an arithmetic number, because the mean of its divisors is an integer number (2467986570).

Almost surely, 2^25205210522 is an apocalyptic number.

25205210522 is a deficient number, since it is larger than the sum of its proper divisors (14282574598).

25205210522 is a wasteful number, since it uses less digits than its factorization.

25205210522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5773165.

The product of its (nonzero) digits is 4000, while the sum is 26.

Adding to 25205210522 its reverse (22501250252), we get a palindrome (47706460774).

The spelling of 25205210522 in words is "twenty-five billion, two hundred five million, two hundred ten thousand, five hundred twenty-two".