30265253021 has 2 divisors, whose sum is σ = 30265253022. Its totient is φ = 30265253020.

The previous prime is 30265253009. The next prime is 30265253027. The reversal of 30265253021 is 12035256203.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17807568025 + 12457684996 = 133445^2 + 111614^2 .

It is a cyclic number.

It is not a de Polignac number, because 30265253021 - 2²² = 30261058717 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30265253027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15132626510 + 15132626511.

It is an arithmetic number, because the mean of its divisors is an integer number (15132626511).

Almost surely, 2^30265253021 is an apocalyptic number.

It is an amenable number.

30265253021 is a deficient number, since it is larger than the sum of its proper divisors (1).

30265253021 is an equidigital number, since it uses as much as digits as its factorization.

30265253021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10800, while the sum is 29.

The spelling of 30265253021 in words is "thirty billion, two hundred sixty-five million, two hundred fifty-three thousand, twenty-one".