12575401787 has 4 divisors (see below), whose sum is σ = 13542740400. Its totient is φ = 11608063176.

The previous prime is 12575401781. The next prime is 12575401843. The reversal of 12575401787 is 78710457521.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12575401787 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12575401781) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 483669287 + ... + 483669312.

It is an arithmetic number, because the mean of its divisors is an integer number (3385685100).

Almost surely, 2^12575401787 is an apocalyptic number.

12575401787 is a deficient number, since it is larger than the sum of its proper divisors (967338613).

12575401787 is an equidigital number, since it uses as much as digits as its factorization.

12575401787 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 967338612.

The product of its (nonzero) digits is 548800, while the sum is 47.

The spelling of 12575401787 in words is "twelve billion, five hundred seventy-five million, four hundred one thousand, seven hundred eighty-seven".