625441668965 has 16 divisors (see below), whose sum is σ = 752406436080. Its totient is φ = 499102679040.

The previous prime is 625441668949. The next prime is 625441668983. The reversal of 625441668965 is 569866144526.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 198460449121 + 426981219844 = 445489^2 + 653438^2 .

It is not a de Polignac number, because 625441668965 - 2⁴ = 625441668949 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 625441668898 and 625441668907.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24777971 + ... + 24803199.

It is an arithmetic number, because the mean of its divisors is an integer number (47025402255).

Almost surely, 2^625441668965 is an apocalyptic number.

It is an amenable number.

625441668965 is a deficient number, since it is larger than the sum of its proper divisors (126964767115).

625441668965 is a wasteful number, since it uses less digits than its factorization.

625441668965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37432.

The product of its digits is 74649600, while the sum is 62.

The spelling of 625441668965 in words is "six hundred twenty-five billion, four hundred forty-one million, six hundred sixty-eight thousand, nine hundred sixty-five".