2545225521 has 16 divisors (see below), whose sum is σ = 3416312064. Its totient is φ = 1685505024.

The previous prime is 2545225483. The next prime is 2545225531. The reversal of 2545225521 is 1255225452.

It is a happy number.

It is not a de Polignac number, because 2545225521 - 2¹⁵ = 2545192753 is a prime.

It is a super-3 number, since 3×2545225521³ (a number of 29 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (2545225531) 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 15 ways as a sum of consecutive naturals, for example, 435400 + ... + 441206.

It is an arithmetic number, because the mean of its divisors is an integer number (213519504).

Almost surely, 2^2545225521 is an apocalyptic number.

It is an amenable number.

2545225521 is a deficient number, since it is larger than the sum of its proper divisors (871086543).

2545225521 is a wasteful number, since it uses less digits than its factorization.

2545225521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6760.

The product of its digits is 40000, while the sum is 33.

The square root of 2545225521 is about 50450.2281560748. The cubic root of 2545225521 is about 1365.3440112961.

The spelling of 2545225521 in words is "two billion, five hundred forty-five million, two hundred twenty-five thousand, five hundred twenty-one".