625443251440 has 160 divisors (see below), whose sum is σ = 1680515475840. Its totient is φ = 212040192000.

The previous prime is 625443251413. The next prime is 625443251441. The reversal of 625443251440 is 44152344526.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 625443251393 and 625443251402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (625443251441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 46429026 + ... + 46442494.

It is an arithmetic number, because the mean of its divisors is an integer number (10503221724).

Almost surely, 2^625443251440 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 625443251440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (840257737920).

625443251440 is an abundant number, since it is smaller than the sum of its proper divisors (1055072224400).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

625443251440 is a wasteful number, since it uses less digits than its factorization.

625443251440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14411 (or 14405 counting only the distinct ones).

The product of its (nonzero) digits is 460800, while the sum is 40.

Adding to 625443251440 its reverse (44152344526), we get a palindrome (669595595966).

The spelling of 625443251440 in words is "six hundred twenty-five billion, four hundred forty-three million, two hundred fifty-one thousand, four hundred forty".