20125354145 has 8 divisors (see below), whose sum is σ = 26008150056. Its totient is φ = 14861799936.

The previous prime is 20125354091. The next prime is 20125354157. The reversal of 20125354145 is 54145352102.

It can be written as a sum of positive squares in 4 ways, for example, as 494261824 + 19631092321 = 22232^2 + 140111^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 20125354145 - 2¹⁰ = 20125353121 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 154810352 + ... + 154810481.

It is an arithmetic number, because the mean of its divisors is an integer number (3251018757).

Almost surely, 2^20125354145 is an apocalyptic number.

It is an amenable number.

20125354145 is a deficient number, since it is larger than the sum of its proper divisors (5882795911).

20125354145 is a wasteful number, since it uses less digits than its factorization.

20125354145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 309620851.

The product of its (nonzero) digits is 24000, while the sum is 32.

The spelling of 20125354145 in words is "twenty billion, one hundred twenty-five million, three hundred fifty-four thousand, one hundred forty-five".