20125764247 has 8 divisors (see below), whose sum is σ = 20901178496. Its totient is φ = 19364321592.

The previous prime is 20125764179. The next prime is 20125764271. The reversal of 20125764247 is 74246752102.

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 20125764247 - 2¹¹ = 20125762199 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20125764647) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3489963 + ... + 3495724.

It is an arithmetic number, because the mean of its divisors is an integer number (2612647312).

Almost surely, 2^20125764247 is an apocalyptic number.

20125764247 is a deficient number, since it is larger than the sum of its proper divisors (775414249).

20125764247 is an equidigital number, since it uses as much as digits as its factorization.

20125764247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6985797.

The product of its (nonzero) digits is 188160, while the sum is 40.

The spelling of 20125764247 in words is "twenty billion, one hundred twenty-five million, seven hundred sixty-four thousand, two hundred forty-seven".