625421410 has 16 divisors (see below), whose sum is σ = 1144214712. Its totient is φ = 246067200.

The previous prime is 625421393. The next prime is 625421413. The reversal of 625421410 is 14124526.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 465221761 + 160199649 = 21569^2 + 12657^2 .

It is not an unprimeable number, because it can be changed into a prime (625421413) 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, 512031 + ... + 513250.

Almost surely, 2^625421410 is an apocalyptic number.

625421410 is a deficient number, since it is larger than the sum of its proper divisors (518793302).

625421410 is a wasteful number, since it uses less digits than its factorization.

625421410 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1025349.

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 625421410 is about 25008.4267797876. The cubic root of 625421410 is about 855.1800904231.

Adding to 625421410 its reverse (14124526), we get a palindrome (639545936).

The spelling of 625421410 in words is "six hundred twenty-five million, four hundred twenty-one thousand, four hundred ten".