16425530394 has 48 divisors (see below), whose sum is σ = 41154085728. Its totient is φ = 4332007008.

The previous prime is 16425530357. The next prime is 16425530399. The reversal of 16425530394 is 49303552461.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (16425530399) 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, 2144992 + ... + 2152635.

It is an arithmetic number, because the mean of its divisors is an integer number (857376786).

Almost surely, 2^16425530394 is an apocalyptic number.

16425530394 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

16425530394 is an abundant number, since it is smaller than the sum of its proper divisors (24728555334).

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

16425530394 is a wasteful number, since it uses less digits than its factorization.

16425530394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4297659 (or 4297652 counting only the distinct ones).

The product of its (nonzero) digits is 388800, while the sum is 42.

The spelling of 16425530394 in words is "sixteen billion, four hundred twenty-five million, five hundred thirty thousand, three hundred ninety-four".