20373643621225 has 24 divisors (see below), whose sum is σ = 26223800105088. Its totient is φ = 15690619099200.

The previous prime is 20373643621211. The next prime is 20373643621231. The reversal of 20373643621225 is 52212634637302.

It is not a de Polignac number, because 20373643621225 - 2¹¹ = 20373643619177 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 142053499 + ... + 142196848.

It is an arithmetic number, because the mean of its divisors is an integer number (1092658337712).

Almost surely, 2^{20373643621225} is an apocalyptic number.

20373643621225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20373643621225 is a deficient number, since it is larger than the sum of its proper divisors (5850156483863).

20373643621225 is a wasteful number, since it uses less digits than its factorization.

20373643621225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 284250465 (or 284250460 counting only the distinct ones).

The product of its (nonzero) digits is 2177280, while the sum is 46.

The spelling of 20373643621225 in words is "twenty trillion, three hundred seventy-three billion, six hundred forty-three million, six hundred twenty-one thousand, two hundred twenty-five".