2499999012 has 72 divisors (see below), whose sum is σ = 7539695520. Its totient is φ = 714283920.

The previous prime is 2499999001. The next prime is 2499999013. The reversal of 2499999012 is 2109999942.

It is a super-2 number, since 2×2499999012² = 12499990120001952288, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 2499999012.

It is not an unprimeable number, because it can be changed into a prime (2499999013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 230914 + ... + 241497.

Almost surely, 2^2499999012 is an apocalyptic number.

It is an amenable number.

2499999012 is an abundant number, since it is smaller than the sum of its proper divisors (5039696508).

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

2499999012 is a wasteful number, since it uses less digits than its factorization.

2499999012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 472438 (or 472423 counting only the distinct ones).

The product of its (nonzero) digits is 944784, while the sum is 54.

The square root of 2499999012 is about 49999.9901199990. The cubic root of 2499999012 is about 1357.2086295078.

The spelling of 2499999012 in words is "two billion, four hundred ninety-nine million, nine hundred ninety-nine thousand, twelve".