20125153513 has 2 divisors, whose sum is σ = 20125153514. Its totient is φ = 20125153512.

The previous prime is 20125153511. The next prime is 20125153589. The reversal of 20125153513 is 31535152102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19663891984 + 461261529 = 140228^2 + 21477^2 .

It is a cyclic number.

It is not a de Polignac number, because 20125153513 - 2¹ = 20125153511 is a prime.

Together with 20125153511, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (20125153511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10062576756 + 10062576757.

It is an arithmetic number, because the mean of its divisors is an integer number (10062576757).

Almost surely, 2^20125153513 is an apocalyptic number.

It is an amenable number.

20125153513 is a deficient number, since it is larger than the sum of its proper divisors (1).

20125153513 is an equidigital number, since it uses as much as digits as its factorization.

20125153513 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4500, while the sum is 28.

The spelling of 20125153513 in words is "twenty billion, one hundred twenty-five million, one hundred fifty-three thousand, five hundred thirteen".