2505299669 has 4 divisors (see below), whose sum is σ = 2563562496. Its totient is φ = 2447036844.

The previous prime is 2505299659. The next prime is 2505299677. The reversal of 2505299669 is 9669925052.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2505299669 - 2¹⁶ = 2505234133 is a prime.

It is a super-2 number, since 2×2505299669² = 12553052862983019122, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2505299669.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2505299659) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29131349 + ... + 29131434.

It is an arithmetic number, because the mean of its divisors is an integer number (640890624).

Almost surely, 2^2505299669 is an apocalyptic number.

It is an amenable number.

2505299669 is a deficient number, since it is larger than the sum of its proper divisors (58262827).

2505299669 is an equidigital number, since it uses as much as digits as its factorization.

2505299669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58262826.

The product of its (nonzero) digits is 2624400, while the sum is 53.

The square root of 2505299669 is about 50052.9686332389. The cubic root of 2505299669 is about 1358.1671657455.

The spelling of 2505299669 in words is "two billion, five hundred five million, two hundred ninety-nine thousand, six hundred sixty-nine".