1285149815254 has 16 divisors (see below), whose sum is σ = 1929676996800. Its totient is φ = 641924374984.

The previous prime is 1285149815249. The next prime is 1285149815293. The reversal of 1285149815254 is 4525189415821.

It is a super-2 number, since 2×1285149815254² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1285149815195 and 1285149815204.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12000357 + ... + 12106975.

It is an arithmetic number, because the mean of its divisors is an integer number (120604812300).

Almost surely, 2^{1285149815254} is an apocalyptic number.

1285149815254 is a deficient number, since it is larger than the sum of its proper divisors (644527181546).

1285149815254 is a wasteful number, since it uses less digits than its factorization.

1285149815254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112667.

The product of its digits is 4608000, while the sum is 55.

The spelling of 1285149815254 in words is "one trillion, two hundred eighty-five billion, one hundred forty-nine million, eight hundred fifteen thousand, two hundred fifty-four".