6461425251 has 24 divisors (see below), whose sum is σ = 9646640640. Its totient is φ = 4165148016.

The previous prime is 6461425249. The next prime is 6461425253. The reversal of 6461425251 is 1525241646.

6461425251 is a `hidden beast` number, since 646 + 1 + 4 + 2 + 5 + 2 + 5 + 1 = 666.

It is an interprime number because it is at equal distance from previous prime (6461425249) and next prime (6461425253).

It is not a de Polignac number, because 6461425251 - 2¹ = 6461425249 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6461425253) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 56911 + ... + 127128.

It is an arithmetic number, because the mean of its divisors is an integer number (401943360).

Almost surely, 2^6461425251 is an apocalyptic number.

6461425251 is a deficient number, since it is larger than the sum of its proper divisors (3185215389).

6461425251 is a wasteful number, since it uses less digits than its factorization.

6461425251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 184175 (or 184172 counting only the distinct ones).

The product of its digits is 57600, while the sum is 36.

The square root of 6461425251 is about 80382.9910553221. The cubic root of 6461425251 is about 1862.5564387864.

Adding to 6461425251 its reverse (1525241646), we get a palindrome (7986666897).

The spelling of 6461425251 in words is "six billion, four hundred sixty-one million, four hundred twenty-five thousand, two hundred fifty-one".