629025221 has 4 divisors (see below), whose sum is σ = 686209344. Its totient is φ = 571841100.

The previous prime is 629025193. The next prime is 629025227. The reversal of 629025221 is 122520926.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 629025221 - 2¹⁴ = 629008837 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (629025227) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28592045 + ... + 28592066.

It is an arithmetic number, because the mean of its divisors is an integer number (171552336).

Almost surely, 2^629025221 is an apocalyptic number.

It is an amenable number.

629025221 is a deficient number, since it is larger than the sum of its proper divisors (57184123).

629025221 is a wasteful number, since it uses less digits than its factorization.

629025221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57184122.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 629025221 is about 25080.3752164915. The cubic root of 629025221 is about 856.8195219647.

The spelling of 629025221 in words is "six hundred twenty-nine million, twenty-five thousand, two hundred twenty-one".