625545545526 has 128 divisors (see below), whose sum is σ = 1566258094080. Its totient is φ = 183434284800.

The previous prime is 625545545519. The next prime is 625545545533.

It is a happy number.

625545545526 is a `hidden beast` number, since 6 + 2 + 5 + 5 + 45 + 545 + 52 + 6 = 666.

625545545526 is nontrivially palindromic in base 10.

625545545526 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (625545545519) and next prime (625545545533).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2162091 + ... + 2434281.

It is an arithmetic number, because the mean of its divisors is an integer number (12236391360).

Almost surely, 2^625545545526 is an apocalyptic number.

625545545526 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 625545545526, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (783129047040).

625545545526 is an abundant number, since it is smaller than the sum of its proper divisors (940712548554).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

625545545526 is a wasteful number, since it uses less digits than its factorization.

625545545526 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 272339 (or 272333 counting only the distinct ones).

The product of its digits is 36000000, while the sum is 54.

The spelling of 625545545526 in words is "six hundred twenty-five billion, five hundred forty-five million, five hundred forty-five thousand, five hundred twenty-six".