1145122505 has 32 divisors (see below), whose sum is σ = 1478062080. Its totient is φ = 849671680.

The previous prime is 1145122481. The next prime is 1145122513. The reversal of 1145122505 is 5052215411.

It is not a de Polignac number, because 1145122505 - 2⁶ = 1145122441 is a prime.

It is a super-2 number, since 2×1145122505² = 2622611102914950050, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 541400 + ... + 543510.

It is an arithmetic number, because the mean of its divisors is an integer number (46189440).

Almost surely, 2^1145122505 is an apocalyptic number.

It is an amenable number.

1145122505 is a deficient number, since it is larger than the sum of its proper divisors (332939575).

1145122505 is a wasteful number, since it uses less digits than its factorization.

1145122505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2281.

The product of its (nonzero) digits is 2000, while the sum is 26.

The square root of 1145122505 is about 33839.6587600998. The cubic root of 1145122505 is about 1046.2062656012.

Adding to 1145122505 its reverse (5052215411), we get a palindrome (6197337916).

The spelling of 1145122505 in words is "one billion, one hundred forty-five million, one hundred twenty-two thousand, five hundred five".