625430040 has 64 divisors (see below), whose sum is σ = 1877990400. Its totient is φ = 166630272.

The previous prime is 625430021. The next prime is 625430041. The reversal of 625430040 is 40034526.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (625430041) 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 15 ways as a sum of consecutive naturals, for example, 209599 + ... + 212561.

It is an arithmetic number, because the mean of its divisors is an integer number (29343600).

Almost surely, 2^625430040 is an apocalyptic number.

625430040 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

625430040 is an abundant number, since it is smaller than the sum of its proper divisors (1252560360).

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

625430040 is a wasteful number, since it uses less digits than its factorization.

625430040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4736 (or 4732 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 24.

The square root of 625430040 is about 25008.5993210336. The cubic root of 625430040 is about 855.1840238617.

Adding to 625430040 its reverse (40034526), we get a palindrome (665464566).

The spelling of 625430040 in words is "six hundred twenty-five million, four hundred thirty thousand, forty".