12565025019 has 8 divisors (see below), whose sum is σ = 18614851920. Its totient is φ = 8376683328.

The previous prime is 12565025017. The next prime is 12565025021. The reversal of 12565025019 is 91052056521.

It is an interprime number because it is at equal distance from previous prime (12565025017) and next prime (12565025021).

It is not a de Polignac number, because 12565025019 - 2¹ = 12565025017 is a prime.

It is a super-2 number, since 2×12565025019² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12565025017) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 232685622 + ... + 232685675.

It is an arithmetic number, because the mean of its divisors is an integer number (2326856490).

Almost surely, 2^12565025019 is an apocalyptic number.

12565025019 is a deficient number, since it is larger than the sum of its proper divisors (6049826901).

12565025019 is an equidigital number, since it uses as much as digits as its factorization.

12565025019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 465371306 (or 465371300 counting only the distinct ones).

The product of its (nonzero) digits is 27000, while the sum is 36.

The spelling of 12565025019 in words is "twelve billion, five hundred sixty-five million, twenty-five thousand, nineteen".