6455252525491 has 24 divisors (see below), whose sum is σ = 8194496296896. Its totient is φ = 5028425554320.

The previous prime is 6455252525483. The next prime is 6455252525507. The reversal of 6455252525491 is 1945252525546.

It is not a de Polignac number, because 6455252525491 - 2³ = 6455252525483 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6455252525471) 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, 299341 + ... + 3605566.

It is an arithmetic number, because the mean of its divisors is an integer number (341437345704).

Almost surely, 2^{6455252525491} is an apocalyptic number.

6455252525491 is a deficient number, since it is larger than the sum of its proper divisors (1739243771405).

6455252525491 is a wasteful number, since it uses less digits than its factorization.

6455252525491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3907999 (or 3907992 counting only the distinct ones).

The product of its digits is 21600000, while the sum is 55.

Adding to 6455252525491 its sum of digits (55), we get a palindrome (6455252525546).

The spelling of 6455252525491 in words is "six trillion, four hundred fifty-five billion, two hundred fifty-two million, five hundred twenty-five thousand, four hundred ninety-one".