15212425427 has 2 divisors, whose sum is σ = 15212425428. Its totient is φ = 15212425426.

The previous prime is 15212425391. The next prime is 15212425457. The reversal of 15212425427 is 72452421251.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 15212425427 - 2⁶ = 15212425363 is a prime.

It is a super-2 number, since 2×15212425427² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (15212425457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7606212713 + 7606212714.

It is an arithmetic number, because the mean of its divisors is an integer number (7606212714).

Almost surely, 2^15212425427 is an apocalyptic number.

15212425427 is a deficient number, since it is larger than the sum of its proper divisors (1).

15212425427 is an equidigital number, since it uses as much as digits as its factorization.

15212425427 is an evil number, because the sum of its binary digits is even.

The product of its digits is 44800, while the sum is 35.

Adding to 15212425427 its reverse (72452421251), we get a palindrome (87664846678).

The spelling of 15212425427 in words is "fifteen billion, two hundred twelve million, four hundred twenty-five thousand, four hundred twenty-seven".