25213122355 has 4 divisors (see below), whose sum is σ = 30255746832. Its totient is φ = 20170497880.

The previous prime is 25213122349. The next prime is 25213122391. The reversal of 25213122355 is 55322131252.

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

It is not a de Polignac number, because 25213122355 - 2¹¹ = 25213120307 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2521312231 + ... + 2521312240.

It is an arithmetic number, because the mean of its divisors is an integer number (7563936708).

Almost surely, 2^25213122355 is an apocalyptic number.

25213122355 is a deficient number, since it is larger than the sum of its proper divisors (5042624477).

25213122355 is an equidigital number, since it uses as much as digits as its factorization.

25213122355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5042624476.

The product of its digits is 18000, while the sum is 31.

The spelling of 25213122355 in words is "twenty-five billion, two hundred thirteen million, one hundred twenty-two thousand, three hundred fifty-five".