20354725524157 has 4 divisors (see below), whose sum is σ = 20354755964956. Its totient is φ = 20354695083360.

The previous prime is 20354725524101. The next prime is 20354725524173. The reversal of 20354725524157 is 75142552745302.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 12643102049796 + 7711623474361 = 3555714^2 + 2776981^2 .

It is a cyclic number.

It is not a de Polignac number, because 20354725524157 - 2³⁵ = 20320365785789 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20354755524157) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14194344 + ... + 15562417.

It is an arithmetic number, because the mean of its divisors is an integer number (5088688991239).

Almost surely, 2^{20354725524157} is an apocalyptic number.

It is an amenable number.

20354725524157 is a deficient number, since it is larger than the sum of its proper divisors (30440799).

20354725524157 is an equidigital number, since it uses as much as digits as its factorization.

20354725524157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30440798.

The product of its (nonzero) digits is 11760000, while the sum is 52.

The spelling of 20354725524157 in words is "twenty trillion, three hundred fifty-four billion, seven hundred twenty-five million, five hundred twenty-four thousand, one hundred fifty-seven".