1245227445 has 192 divisors, whose sum is σ = 2853100800. Its totient is φ = 509483520.

The previous prime is 1245227393. The next prime is 1245227471. The reversal of 1245227445 is 5447225421.

1245227445 is a `hidden beast` number, since 1 + 24 + 522 + 74 + 45 = 666.

It is not a de Polignac number, because 1245227445 - 2¹⁷ = 1245096373 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 7931307 + ... + 7931463.

It is an arithmetic number, because the mean of its divisors is an integer number (14859900).

Almost surely, 2^1245227445 is an apocalyptic number.

1245227445 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1245227445 is an abundant number, since it is smaller than the sum of its proper divisors (1607873355).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1245227445 is a wasteful number, since it uses less digits than its factorization.

1245227445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 305 (or 292 counting only the distinct ones).

The product of its digits is 89600, while the sum is 36.

The square root of 1245227445 is about 35287.7803920847. The cubic root of 1245227445 is about 1075.8446421105.

The spelling of 1245227445 in words is "one billion, two hundred forty-five million, two hundred twenty-seven thousand, four hundred forty-five".