6425526451553 has 48 divisors (see below), whose sum is σ = 7688485843920. Its totient is φ = 5343514767360.

The previous prime is 6425526451541. The next prime is 6425526451639. The reversal of 6425526451553 is 3551546255246.

It can be written as a sum of positive squares in 8 ways, for example, as 1471216165969 + 4954310285584 = 1212937^2 + 2225828^2 .

It is not a de Polignac number, because 6425526451553 - 2⁴⁰ = 5326014823777 is a prime.

It is a super-2 number, since 2×6425526451553² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6425526451495 and 6425526451504.

It is not an unprimeable number, because it can be changed into a prime (6425526459553) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 72487583 + ... + 72576171.

It is an arithmetic number, because the mean of its divisors is an integer number (160176788415).

Almost surely, 2^{6425526451553} is an apocalyptic number.

It is an amenable number.

6425526451553 is a deficient number, since it is larger than the sum of its proper divisors (1262959392367).

6425526451553 is a wasteful number, since it uses less digits than its factorization.

6425526451553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89618 (or 89607 counting only the distinct ones).

The product of its digits is 21600000, while the sum is 53.

The spelling of 6425526451553 in words is "six trillion, four hundred twenty-five billion, five hundred twenty-six million, four hundred fifty-one thousand, five hundred fifty-three".