1245572520 has 32 divisors (see below), whose sum is σ = 3736717920. Its totient is φ = 332152640.

The previous prime is 1245572519. The next prime is 1245572527. The reversal of 1245572520 is 252755421.

It is a super-3 number, since 3×1245572520³ (a number of 28 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (1245572527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5189766 + ... + 5190005.

It is an arithmetic number, because the mean of its divisors is an integer number (116772435).

Almost surely, 2^1245572520 is an apocalyptic number.

1245572520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1245572520 is an abundant number, since it is smaller than the sum of its proper divisors (2491145400).

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

1245572520 is a wasteful number, since it uses less digits than its factorization.

1245572520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10379785 (or 10379781 counting only the distinct ones).

The product of its (nonzero) digits is 28000, while the sum is 33.

The square root of 1245572520 is about 35292.6694938198. The cubic root of 1245572520 is about 1075.9440115881.

The spelling of 1245572520 in words is "one billion, two hundred forty-five million, five hundred seventy-two thousand, five hundred twenty".