12499755 has 16 divisors (see below), whose sum is σ = 20093184. Its totient is φ = 6635360.

The previous prime is 12499733. The next prime is 12499757. The reversal of 12499755 is 55799421.

It is not a de Polignac number, because 12499755 - 2⁶ = 12499691 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12499757) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1570 + ... + 5240.

It is an arithmetic number, because the mean of its divisors is an integer number (1255824).

Almost surely, 2^12499755 is an apocalyptic number.

12499755 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12499755 is a deficient number, since it is larger than the sum of its proper divisors (7593429).

12499755 is a wasteful number, since it uses less digits than its factorization.

12499755 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3906.

The product of its digits is 113400, while the sum is 42.

The square root of 12499755 is about 3535.4992575307. The cubic root of 12499755 is about 232.0779254184.

The spelling of 12499755 in words is "twelve million, four hundred ninety-nine thousand, seven hundred fifty-five".