20621122301625 has 32 divisors (see below), whose sum is σ = 34317337611648. Its totient is φ = 10996717118400.

The previous prime is 20621122301603. The next prime is 20621122301651. The reversal of 20621122301625 is 52610322112602.

It is a happy number.

It is not a de Polignac number, because 20621122301625 - 2⁶ = 20621122301561 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 367719 + ... + 6432531.

It is an arithmetic number, because the mean of its divisors is an integer number (1072416800364).

Almost surely, 2^{20621122301625} is an apocalyptic number.

20621122301625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20621122301625 is a deficient number, since it is larger than the sum of its proper divisors (13696215310023).

20621122301625 is an equidigital number, since it uses as much as digits as its factorization.

20621122301625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6073898 (or 6073888 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 33.

The spelling of 20621122301625 in words is "twenty trillion, six hundred twenty-one billion, one hundred twenty-two million, three hundred one thousand, six hundred twenty-five".