21625130064634 has 8 divisors (see below), whose sum is σ = 32443001461620. Its totient is φ = 10810796244096.

The previous prime is 21625130064623. The next prime is 21625130064667. The reversal of 21625130064634 is 43646003152612.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 20617911083025 + 1007218981609 = 4540695^2 + 1003603^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

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, 884378829 + ... + 884403280.

Almost surely, 2^{21625130064634} is an apocalyptic number.

21625130064634 is a deficient number, since it is larger than the sum of its proper divisors (10817871396986).

21625130064634 is a wasteful number, since it uses less digits than its factorization.

21625130064634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1768788224.

The product of its (nonzero) digits is 622080, while the sum is 43.

The spelling of 21625130064634 in words is "twenty-one trillion, six hundred twenty-five billion, one hundred thirty million, sixty-four thousand, six hundred thirty-four".