625630276655 has 4 divisors (see below), whose sum is σ = 750756331992. Its totient is φ = 500504221320.

The previous prime is 625630276639. The next prime is 625630276703. The reversal of 625630276655 is 556672036526.

625630276655 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 556672036526 = 2 ⋅278336018263.

It is not a de Polignac number, because 625630276655 - 2⁴ = 625630276639 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 625630276597 and 625630276606.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 62563027661 + ... + 62563027670.

It is an arithmetic number, because the mean of its divisors is an integer number (187689082998).

Almost surely, 2^625630276655 is an apocalyptic number.

625630276655 is a deficient number, since it is larger than the sum of its proper divisors (125126055337).

625630276655 is a wasteful number, since it uses less digits than its factorization.

625630276655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125126055336.

The product of its (nonzero) digits is 13608000, while the sum is 53.

The spelling of 625630276655 in words is "six hundred twenty-five billion, six hundred thirty million, two hundred seventy-six thousand, six hundred fifty-five".