625421412 has 360 divisors, whose sum is σ = 2141270208. Its totient is φ = 155675520.

The previous prime is 625421393. The next prime is 625421413. The reversal of 625421412 is 214124526.

625421412 is a `hidden beast` number, since 625 + 4 + 21 + 4 + 12 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

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 119 ways as a sum of consecutive naturals, for example, 11800378 + ... + 11800430.

Almost surely, 2^625421412 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 625421412, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1070635104).

625421412 is an abundant number, since it is smaller than the sum of its proper divisors (1515848796).

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

625421412 is a wasteful number, since it uses less digits than its factorization.

625421412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141 (or 119 counting only the distinct ones).

The product of its digits is 3840, while the sum is 27.

The square root of 625421412 is about 25008.4268197742. The cubic root of 625421412 is about 855.1800913347.

Adding to 625421412 its reverse (214124526), we get a palindrome (839545938).

The spelling of 625421412 in words is "six hundred twenty-five million, four hundred twenty-one thousand, four hundred twelve".