2528055309 has 16 divisors (see below), whose sum is σ = 3755203200. Its totient is φ = 1502079936.

The previous prime is 2528055307. The next prime is 2528055319. The reversal of 2528055309 is 9035508252.

It is not a de Polignac number, because 2528055309 - 2¹ = 2528055307 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2528055307) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1116489 + ... + 1118750.

It is an arithmetic number, because the mean of its divisors is an integer number (234700200).

Almost surely, 2^2528055309 is an apocalyptic number.

2528055309 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

It is an amenable number.

2528055309 is a deficient number, since it is larger than the sum of its proper divisors (1227147891).

2528055309 is a wasteful number, since it uses less digits than its factorization.

2528055309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2235284.

The product of its (nonzero) digits is 108000, while the sum is 39.

The square root of 2528055309 is about 50279.7703753706. The cubic root of 2528055309 is about 1362.2668562054.

The spelling of 2528055309 in words is "two billion, five hundred twenty-eight million, fifty-five thousand, three hundred nine".