2505401302431 has 4 divisors (see below), whose sum is σ = 3340535069912. Its totient is φ = 1670267534952.

The previous prime is 2505401302429. The next prime is 2505401302433. The reversal of 2505401302431 is 1342031045052.

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

It is an interprime number because it is at equal distance from previous prime (2505401302429) and next prime (2505401302433).

It is not a de Polignac number, because 2505401302431 - 2¹ = 2505401302429 is a prime.

It is a super-2 number, since 2×2505401302431² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2505401302433) 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, 417566883736 + ... + 417566883741.

It is an arithmetic number, because the mean of its divisors is an integer number (835133767478).

Almost surely, 2^{2505401302431} is an apocalyptic number.

2505401302431 is a deficient number, since it is larger than the sum of its proper divisors (835133767481).

2505401302431 is an equidigital number, since it uses as much as digits as its factorization.

2505401302431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 835133767480.

The product of its (nonzero) digits is 14400, while the sum is 30.

Adding to 2505401302431 its reverse (1342031045052), we get a palindrome (3847432347483).

The spelling of 2505401302431 in words is "two trillion, five hundred five billion, four hundred one million, three hundred two thousand, four hundred thirty-one".