12581995 has 8 divisors (see below), whose sum is σ = 15127200. Its totient is φ = 10046400.

The previous prime is 12581993. The next prime is 12582013. The reversal of 12581995 is 59918521.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12581995 - 2¹ = 12581993 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12581993) 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, 895 + ... + 5095.

It is an arithmetic number, because the mean of its divisors is an integer number (1890900).

Almost surely, 2^12581995 is an apocalyptic number.

12581995 is a deficient number, since it is larger than the sum of its proper divisors (2545205).

12581995 is an equidigital number, since it uses as much as digits as its factorization.

12581995 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4805.

The product of its digits is 32400, while the sum is 40.

The square root of 12581995 is about 3547.1107961269. The cubic root of 12581995 is about 232.5857855866.

The spelling of 12581995 in words is "twelve million, five hundred eighty-one thousand, nine hundred ninety-five".