252001525154021 has 2 divisors, whose sum is σ = 252001525154022. Its totient is φ = 252001525154020.

The previous prime is 252001525154009. The next prime is 252001525154077. The reversal of 252001525154021 is 120451525100252.

252001525154021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 138224956261921 + 113776568892100 = 11756911^2 + 10666610^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-252001525154021 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (252001525154081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126000762577010 + 126000762577011.

It is an arithmetic number, because the mean of its divisors is an integer number (126000762577011).

Almost surely, 2^{252001525154021} is an apocalyptic number.

It is an amenable number.

252001525154021 is a deficient number, since it is larger than the sum of its proper divisors (1).

252001525154021 is an equidigital number, since it uses as much as digits as its factorization.

252001525154021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40000, while the sum is 35.

The spelling of 252001525154021 in words is "two hundred fifty-two trillion, one billion, five hundred twenty-five million, one hundred fifty-four thousand, twenty-one".