16457381625 has 16 divisors (see below), whose sum is σ = 27385083648. Its totient is φ = 8777270000.

The previous prime is 16457381621. The next prime is 16457381653. The reversal of 16457381625 is 52618375461.

It is not a de Polignac number, because 16457381625 - 2² = 16457381621 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16457381621) 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, 21942801 + ... + 21943550.

It is an arithmetic number, because the mean of its divisors is an integer number (1711567728).

Almost surely, 2^16457381625 is an apocalyptic number.

16457381625 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16457381625 is a deficient number, since it is larger than the sum of its proper divisors (10927702023).

16457381625 is an equidigital number, since it uses as much as digits as its factorization.

16457381625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43886369 (or 43886359 counting only the distinct ones).

The product of its digits is 1209600, while the sum is 48.

The spelling of 16457381625 in words is "sixteen billion, four hundred fifty-seven million, three hundred eighty-one thousand, six hundred twenty-five".