30012252157 has 2 divisors, whose sum is σ = 30012252158. Its totient is φ = 30012252156.

The previous prime is 30012252143. The next prime is 30012252209. The reversal of 30012252157 is 75125221003.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 30002050521 + 10201636 = 173211^2 + 3194^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30012252157 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30012222157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15006126078 + 15006126079.

It is an arithmetic number, because the mean of its divisors is an integer number (15006126079).

Almost surely, 2^30012252157 is an apocalyptic number.

It is an amenable number.

30012252157 is a deficient number, since it is larger than the sum of its proper divisors (1).

30012252157 is an equidigital number, since it uses as much as digits as its factorization.

30012252157 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4200, while the sum is 28.

The spelling of 30012252157 in words is "thirty billion, twelve million, two hundred fifty-two thousand, one hundred fifty-seven".