205425103234402 has 16 divisors (see below), whose sum is σ = 317496532510080. Its totient is φ = 99611010519408.

The previous prime is 205425103234399. The next prime is 205425103234423. The reversal of 205425103234402 is 204432301524502.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4521174202 + ... + 4521219637.

It is an arithmetic number, because the mean of its divisors is an integer number (19843533281880).

Almost surely, 2^{205425103234402} is an apocalyptic number.

205425103234402 is a deficient number, since it is larger than the sum of its proper divisors (112071429275678).

205425103234402 is a wasteful number, since it uses less digits than its factorization.

205425103234402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9042394185.

The product of its (nonzero) digits is 230400, while the sum is 37.

Adding to 205425103234402 its reverse (204432301524502), we get a palindrome (409857404758904).

The spelling of 205425103234402 in words is "two hundred five trillion, four hundred twenty-five billion, one hundred three million, two hundred thirty-four thousand, four hundred two".