1121156367525 has 36 divisors (see below), whose sum is σ = 2009080516768. Its totient is φ = 597662750880.

The previous prime is 1121156367493. The next prime is 1121156367533. The reversal of 1121156367525 is 5257636511211.

1121156367525 is a `hidden beast` number, since 1 + 1 + 2 + 1 + 1 + 5 + 63 + 67 + 525 = 666.

It is not a de Polignac number, because 1121156367525 - 2⁵ = 1121156367493 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 727417 + ... + 1664766.

Almost surely, 2^{1121156367525} is an apocalyptic number.

1121156367525 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1121156367525 is a deficient number, since it is larger than the sum of its proper divisors (887924149243).

1121156367525 is a wasteful number, since it uses less digits than its factorization.

1121156367525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2394282 (or 2394274 counting only the distinct ones).

The product of its digits is 378000, while the sum is 45.

The spelling of 1121156367525 in words is "one trillion, one hundred twenty-one billion, one hundred fifty-six million, three hundred sixty-seven thousand, five hundred twenty-five".