25205405042222 has 4 divisors (see below), whose sum is σ = 37808107563336. Its totient is φ = 12602702521110.

The previous prime is 25205405042189. The next prime is 25205405042231. The reversal of 25205405042222 is 22224050450252.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6301351260554 + ... + 6301351260557.

It is an arithmetic number, because the mean of its divisors is an integer number (9452026890834).

Almost surely, 2^{25205405042222} is an apocalyptic number.

25205405042222 is a deficient number, since it is larger than the sum of its proper divisors (12602702521114).

25205405042222 is a wasteful number, since it uses less digits than its factorization.

25205405042222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12602702521113.

The product of its (nonzero) digits is 128000, while the sum is 35.

Adding to 25205405042222 its reverse (22224050450252), we get a palindrome (47429455492474).

The spelling of 25205405042222 in words is "twenty-five trillion, two hundred five billion, four hundred five million, forty-two thousand, two hundred twenty-two".