12501256440442 has 96 divisors (see below), whose sum is σ = 24036797874240. Its totient is φ = 4821445440000.

The previous prime is 12501256440403. The next prime is 12501256440451. The reversal of 12501256440442 is 24404465210521.

It is a junction number, because it is equal to n+sod(n) for n = 12501256440395 and 12501256440404.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 837373234 + ... + 837388162.

It is an arithmetic number, because the mean of its divisors is an integer number (250383311190).

Almost surely, 2^{12501256440442} is an apocalyptic number.

12501256440442 is a deficient number, since it is larger than the sum of its proper divisors (11535541433798).

12501256440442 is a wasteful number, since it uses less digits than its factorization.

12501256440442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22748 (or 22741 counting only the distinct ones).

The product of its (nonzero) digits is 307200, while the sum is 40.

The spelling of 12501256440442 in words is "twelve trillion, five hundred one billion, two hundred fifty-six million, four hundred forty thousand, four hundred forty-two".