625941388197 has 6 divisors (see below), whose sum is σ = 904137560742. Its totient is φ = 417294258792.

The previous prime is 625941388157. The next prime is 625941388201. The reversal of 625941388197 is 791883149526.

625941388197 is a `hidden beast` number, since 6 + 2 + 59 + 413 + 8 + 81 + 97 = 666.

625941388197 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 412156296036 + 213785092161 = 641994^2 + 462369^2 .

It is not a de Polignac number, because 625941388197 - 2⁶ = 625941388133 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (625941388117) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 34774521558 + ... + 34774521575.

It is an arithmetic number, because the mean of its divisors is an integer number (150689593457).

Almost surely, 2^625941388197 is an apocalyptic number.

It is an amenable number.

625941388197 is a deficient number, since it is larger than the sum of its proper divisors (278196172545).

625941388197 is a wasteful number, since it uses less digits than its factorization.

625941388197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69549043139 (or 69549043136 counting only the distinct ones).

The product of its digits is 26127360, while the sum is 63.

The spelling of 625941388197 in words is "six hundred twenty-five billion, nine hundred forty-one million, three hundred eighty-eight thousand, one hundred ninety-seven".