1245352545 has 24 divisors (see below), whose sum is σ = 2159555112. Its totient is φ = 663897600.

The previous prime is 1245352529. The next prime is 1245352571. The reversal of 1245352545 is 5452535421.

1245352545 is a `hidden beast` number, since 12 + 4 + 53 + 52 + 545 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 831514896 + 413837649 = 28836^2 + 20343^2 .

It is not a de Polignac number, because 1245352545 - 2⁴ = 1245352529 is a prime.

It is a super-2 number, since 2×1245352545² = 3101805922675954050, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 133225 + ... + 142265.

It is an arithmetic number, because the mean of its divisors is an integer number (89981463).

Almost surely, 2^1245352545 is an apocalyptic number.

1245352545 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1245352545 is a deficient number, since it is larger than the sum of its proper divisors (914202567).

1245352545 is a wasteful number, since it uses less digits than its factorization.

1245352545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12113 (or 12110 counting only the distinct ones).

The product of its digits is 120000, while the sum is 36.

The square root of 1245352545 is about 35289.5529158418. The cubic root of 1245352545 is about 1075.8806686368.

Adding to 1245352545 its reverse (5452535421), we get a palindrome (6697887966).

The spelling of 1245352545 in words is "one billion, two hundred forty-five million, three hundred fifty-two thousand, five hundred forty-five".