12525858 has 12 divisors (see below), whose sum is σ = 27139398. Its totient is φ = 4175280.

The previous prime is 12525841. The next prime is 12525859. The reversal of 12525858 is 85852521.

It can be written as a sum of positive squares in only one way, i.e., 10284849 + 2241009 = 3207^2 + 1497^2 .

It is an alternating number because its digits alternate between odd and even.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12525859) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 347923 + ... + 347958.

Almost surely, 2^12525858 is an apocalyptic number.

12525858 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

12525858 is an abundant number, since it is smaller than the sum of its proper divisors (14613540).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12525858 is a wasteful number, since it uses less digits than its factorization.

12525858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 695889 (or 695886 counting only the distinct ones).

The product of its digits is 32000, while the sum is 36.

The square root of 12525858 is about 3539.1888901272. The cubic root of 12525858 is about 232.2393610648.

It can be divided in two parts, 125258 and 58, that added together give a square (125316 = 354²).

The spelling of 12525858 in words is "twelve million, five hundred twenty-five thousand, eight hundred fifty-eight".