1405625430 has 64 divisors (see below), whose sum is σ = 3683750400. Its totient is φ = 340427520.

The previous prime is 1405625423. The next prime is 1405625443. The reversal of 1405625430 is 345265041.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 671826 + ... + 673914.

It is an arithmetic number, because the mean of its divisors is an integer number (57558600).

Almost surely, 2^1405625430 is an apocalyptic number.

1405625430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1405625430 is an abundant number, since it is smaller than the sum of its proper divisors (2278124970).

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

1405625430 is a wasteful number, since it uses less digits than its factorization.

1405625430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4149.

The product of its (nonzero) digits is 14400, while the sum is 30.

The square root of 1405625430 is about 37491.6714751423. The cubic root of 1405625430 is about 1120.1852983170.

The spelling of 1405625430 in words is "one billion, four hundred five million, six hundred twenty-five thousand, four hundred thirty".