2528071465 has 4 divisors (see below), whose sum is σ = 3033685764. Its totient is φ = 2022457168.

The previous prime is 2528071459. The next prime is 2528071487. The reversal of 2528071465 is 5641708252.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 510624409 + 2017447056 = 22597^2 + 44916^2 .

It is a cyclic number.

It is not a de Polignac number, because 2528071465 - 2¹³ = 2528063273 is a prime.

It is a super-2 number, since 2×2528071465² = 12782290664294492450, which contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 252807142 + ... + 252807151.

It is an arithmetic number, because the mean of its divisors is an integer number (758421441).

Almost surely, 2^2528071465 is an apocalyptic number.

It is an amenable number.

2528071465 is a deficient number, since it is larger than the sum of its proper divisors (505614299).

2528071465 is an equidigital number, since it uses as much as digits as its factorization.

2528071465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 505614298.

The product of its (nonzero) digits is 134400, while the sum is 40.

The square root of 2528071465 is about 50279.9310361500. The cubic root of 2528071465 is about 1362.2697581377.

The spelling of 2528071465 in words is "two billion, five hundred twenty-eight million, seventy-one thousand, four hundred sixty-five".