421625088 has 90 divisors (see below), whose sum is σ = 1257271554. Its totient is φ = 140534784.

The previous prime is 421625011. The next prime is 421625089. The reversal of 421625088 is 880526124.

421625088 is a `hidden beast` number, since 4 + 21 + 625 + 0 + 8 + 8 = 666.

It can be written as a sum of positive squares in only one way, i.e., 418120704 + 3504384 = 20448^2 + 1872^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421625089) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 10570 + ... + 30902.

Almost surely, 2^421625088 is an apocalyptic number.

421625088 is a gapful number since it is divisible by the number (48) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 421625088, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (628635777).

421625088 is an abundant number, since it is smaller than the sum of its proper divisors (835646466).

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

421625088 is an equidigital number, since it uses as much as digits as its factorization.

421625088 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20361 (or 20338 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 36.

The square root of 421625088 is about 20533.5113412197. The cubic root of 421625088 is about 749.8518747471.

The spelling of 421625088 in words is "four hundred twenty-one million, six hundred twenty-five thousand, eighty-eight".