205156007425 has 12 divisors (see below), whose sum is σ = 254652272640. Its totient is φ = 163957823120.

The previous prime is 205156007411. The next prime is 205156007467. The reversal of 205156007425 is 524700651502.

It is not a de Polignac number, because 205156007425 - 2²⁵ = 205122452993 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4149505 + ... + 4198654.

It is an arithmetic number, because the mean of its divisors is an integer number (21221022720).

Almost surely, 2^205156007425 is an apocalyptic number.

205156007425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

205156007425 is a deficient number, since it is larger than the sum of its proper divisors (49496265215).

205156007425 is an equidigital number, since it uses as much as digits as its factorization.

205156007425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8349152 (or 8349147 counting only the distinct ones).

The product of its (nonzero) digits is 84000, while the sum is 37.

Adding to 205156007425 its reverse (524700651502), we get a palindrome (729856658927).

The spelling of 205156007425 in words is "two hundred five billion, one hundred fifty-six million, seven thousand, four hundred twenty-five".