2545228620 has 72 divisors (see below), whose sum is σ = 8422399440. Its totient is φ = 617024640.

The previous prime is 2545228597. The next prime is 2545228639. The reversal of 2545228620 is 268225452.

2545228620 is a `hidden beast` number, since 2 + 5 + 4 + 5 + 2 + 28 + 620 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 640755 + ... + 644714.

It is an arithmetic number, because the mean of its divisors is an integer number (116977770).

Almost surely, 2^2545228620 is an apocalyptic number.

2545228620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2545228620 is an abundant number, since it is smaller than the sum of its proper divisors (5877170820).

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

2545228620 is a wasteful number, since it uses less digits than its factorization.

2545228620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1285495 (or 1285490 counting only the distinct ones).

The product of its (nonzero) digits is 76800, while the sum is 36.

The square root of 2545228620 is about 50450.2588695043. The cubic root of 2545228620 is about 1365.3445654316.

The spelling of 2545228620 in words is "two billion, five hundred forty-five million, two hundred twenty-eight thousand, six hundred twenty".