1125215455 has 64 divisors (see below), whose sum is σ = 1715890176. Its totient is φ = 689472000.

The previous prime is 1125215383. The next prime is 1125215459. The reversal of 1125215455 is 5545125211.

It is not a de Polignac number, because 1125215455 - 2⁷ = 1125215327 is a prime.

It is a super-2 number, since 2×1125215455² = 2532219640341714050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1125215459) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1970320 + ... + 1970890.

It is an arithmetic number, because the mean of its divisors is an integer number (26810784).

Almost surely, 2^1125215455 is an apocalyptic number.

1125215455 is a deficient number, since it is larger than the sum of its proper divisors (590674721).

1125215455 is a wasteful number, since it uses less digits than its factorization.

1125215455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 728.

The product of its digits is 10000, while the sum is 31.

The square root of 1125215455 is about 33544.2313222408. The cubic root of 1125215455 is about 1040.1083020227.

The spelling of 1125215455 in words is "one billion, one hundred twenty-five million, two hundred fifteen thousand, four hundred fifty-five".