625561743 has 8 divisors (see below), whose sum is σ = 839606656. Its totient is φ = 414279000.

The previous prime is 625561693. The next prime is 625561763. The reversal of 625561743 is 347165526.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-625561743 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (625561763) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 690013 + ... + 690918.

It is an arithmetic number, because the mean of its divisors is an integer number (104950832).

Almost surely, 2^625561743 is an apocalyptic number.

625561743 is a deficient number, since it is larger than the sum of its proper divisors (214044913).

625561743 is a wasteful number, since it uses less digits than its factorization.

625561743 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1381085.

The product of its digits is 151200, while the sum is 39.

The square root of 625561743 is about 25011.2323366922. The cubic root of 625561743 is about 855.2440478396.

The spelling of 625561743 in words is "six hundred twenty-five million, five hundred sixty-one thousand, seven hundred forty-three".