511225245 has 12 divisors (see below), whose sum is σ = 886123836. Its totient is φ = 272653440.

The previous prime is 511225223. The next prime is 511225261. The reversal of 511225245 is 542522115.

It can be written as a sum of positive squares in 2 ways, for example, as 206583129 + 304642116 = 14373^2 + 17454^2 .

It is not a de Polignac number, because 511225245 - 2⁹ = 511224733 is a prime.

It is a super-2 number, since 2×511225245² = 522702502250620050, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5680236 + ... + 5680325.

It is an arithmetic number, because the mean of its divisors is an integer number (73843653).

Almost surely, 2^511225245 is an apocalyptic number.

It is an amenable number.

511225245 is a deficient number, since it is larger than the sum of its proper divisors (374898591).

511225245 is a wasteful number, since it uses less digits than its factorization.

511225245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11360572 (or 11360569 counting only the distinct ones).

The product of its digits is 4000, while the sum is 27.

The square root of 511225245 is about 22610.2906880916. The cubic root of 511225245 is about 799.5962780659.

The spelling of 511225245 in words is "five hundred eleven million, two hundred twenty-five thousand, two hundred forty-five".