2505351247 has 8 divisors (see below), whose sum is σ = 2871911552. Its totient is φ = 2140954200.

The previous prime is 2505351223. The next prime is 2505351271. The reversal of 2505351247 is 7421535052.

It is an interprime number because it is at equal distance from previous prime (2505351223) and next prime (2505351271).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-2505351247 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2505351547) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 538329 + ... + 542962.

It is an arithmetic number, because the mean of its divisors is an integer number (358988944).

Almost surely, 2^2505351247 is an apocalyptic number.

2505351247 is a deficient number, since it is larger than the sum of its proper divisors (366560305).

2505351247 is a wasteful number, since it uses less digits than its factorization.

2505351247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1081629.

The product of its (nonzero) digits is 42000, while the sum is 34.

The square root of 2505351247 is about 50053.4838647621. The cubic root of 2505351247 is about 1358.1764861296.

Adding to 2505351247 its reverse (7421535052), we get a palindrome (9926886299).

The spelling of 2505351247 in words is "two billion, five hundred five million, three hundred fifty-one thousand, two hundred forty-seven".