629125409 has 24 divisors (see below), whose sum is σ = 742968288. Its totient is φ = 526490240.

The previous prime is 629125403. The next prime is 629125429. The reversal of 629125409 is 904521926.

It is not a de Polignac number, because 629125409 - 2⁸ = 629125153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (629125403) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 412322 + ... + 413844.

It is an arithmetic number, because the mean of its divisors is an integer number (30957012).

Almost surely, 2^629125409 is an apocalyptic number.

It is an amenable number.

629125409 is a deficient number, since it is larger than the sum of its proper divisors (113842879).

629125409 is a wasteful number, since it uses less digits than its factorization.

629125409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1645 (or 1598 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 38.

The square root of 629125409 is about 25082.3724755056. The cubic root of 629125409 is about 856.8650095299.

The spelling of 629125409 in words is "six hundred twenty-nine million, one hundred twenty-five thousand, four hundred nine".