1049278158525 has 24 divisors (see below), whose sum is σ = 1735529990400. Its totient is φ = 559381651840.

The previous prime is 1049278158521. The next prime is 1049278158589. The reversal of 1049278158525 is 5258518729401.

It is not a de Polignac number, because 1049278158525 - 2² = 1049278158521 is a prime.

It is a super-2 number, since 2×1049278158525² (a number of 25 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1049278158521) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 2735952 + ... + 3095801.

It is an arithmetic number, because the mean of its divisors is an integer number (72313749600).

Almost surely, 2^{1049278158525} is an apocalyptic number.

1049278158525 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1049278158525 is a deficient number, since it is larger than the sum of its proper divisors (686251831875).

1049278158525 is a wasteful number, since it uses less digits than its factorization.

1049278158525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5834165 (or 5834160 counting only the distinct ones).

The product of its (nonzero) digits is 8064000, while the sum is 57.

The spelling of 1049278158525 in words is "one trillion, forty-nine billion, two hundred seventy-eight million, one hundred fifty-eight thousand, five hundred twenty-five".