164624736425 has 12 divisors (see below), whose sum is σ = 216142595676. Its totient is φ = 123952742400.

The previous prime is 164624736379. The next prime is 164624736443. The reversal of 164624736425 is 524637426461.

It can be written as a sum of positive squares in 6 ways, for example, as 16828316176 + 147796420249 = 129724^2 + 384443^2 .

It is a de Polignac number, because none of the positive numbers 2^k-164624736425 is a prime.

It is a Duffinian number.

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, 193675736 + ... + 193676585.

It is an arithmetic number, because the mean of its divisors is an integer number (18011882973).

Almost surely, 2^164624736425 is an apocalyptic number.

It is an amenable number.

164624736425 is a deficient number, since it is larger than the sum of its proper divisors (51517859251).

164624736425 is a wasteful number, since it uses less digits than its factorization.

164624736425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 387352348 (or 387352343 counting only the distinct ones).

The product of its digits is 5806080, while the sum is 50.

The spelling of 164624736425 in words is "one hundred sixty-four billion, six hundred twenty-four million, seven hundred thirty-six thousand, four hundred twenty-five".