1155394308725 has 48 divisors (see below), whose sum is σ = 1547804059200. Its totient is φ = 852903406080.

The previous prime is 1155394308623. The next prime is 1155394308779. The reversal of 1155394308725 is 5278034935511.

It is not a de Polignac number, because 1155394308725 - 2³⁸ = 880516401781 is a prime.

It is a super-2 number, since 2×1155394308725² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

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, 2628467 + ... + 3036383.

It is an arithmetic number, because the mean of its divisors is an integer number (32245917900).

Almost surely, 2^{1155394308725} is an apocalyptic number.

It is an amenable number.

1155394308725 is a deficient number, since it is larger than the sum of its proper divisors (392409750475).

1155394308725 is a wasteful number, since it uses less digits than its factorization.

1155394308725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 408102 (or 408097 counting only the distinct ones).

The product of its (nonzero) digits is 4536000, while the sum is 53.

The spelling of 1155394308725 in words is "one trillion, one hundred fifty-five billion, three hundred ninety-four million, three hundred eight thousand, seven hundred twenty-five".