1625016405 has 16 divisors (see below), whose sum is σ = 2636648064. Its totient is φ = 854468160.

The previous prime is 1625016403. The next prime is 1625016443. The reversal of 1625016405 is 5046105261.

It is not a de Polignac number, because 1625016405 - 2¹ = 1625016403 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1625016403) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 761854 + ... + 763983.

It is an arithmetic number, because the mean of its divisors is an integer number (164790504).

Almost surely, 2^1625016405 is an apocalyptic number.

1625016405 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1625016405 is a deficient number, since it is larger than the sum of its proper divisors (1011631659).

1625016405 is a wasteful number, since it uses less digits than its factorization.

1625016405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1525916.

The product of its (nonzero) digits is 7200, while the sum is 30.

The square root of 1625016405 is about 40311.4922199613. The cubic root of 1625016405 is about 1175.6713001184.

The spelling of 1625016405 in words is "one billion, six hundred twenty-five million, sixteen thousand, four hundred five".