625541013 has 6 divisors (see below), whose sum is σ = 903559254. Its totient is φ = 417027336.

The previous prime is 625540999. The next prime is 625541023. The reversal of 625541013 is 310145526.

625541013 is a `hidden beast` number, since 6 + 2 + 554 + 101 + 3 = 666.

It can be written as a sum of positive squares in only one way, i.e., 618666129 + 6874884 = 24873^2 + 2622^2 .

It is not a de Polignac number, because 625541013 - 2⁴ = 625540997 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (625541023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 34752270 + ... + 34752287.

It is an arithmetic number, because the mean of its divisors is an integer number (150593209).

Almost surely, 2^625541013 is an apocalyptic number.

It is an amenable number.

625541013 is a deficient number, since it is larger than the sum of its proper divisors (278018241).

625541013 is a wasteful number, since it uses less digits than its factorization.

625541013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69504563 (or 69504560 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 625541013 is about 25010.8179194524. The cubic root of 625541013 is about 855.2346006479.

Adding to 625541013 its reverse (310145526), we get a palindrome (935686539).

The spelling of 625541013 in words is "six hundred twenty-five million, five hundred forty-one thousand, thirteen".