16915225425 has 48 divisors (see below), whose sum is σ = 32153275392. Its totient is φ = 7686331200.

The previous prime is 16915225421. The next prime is 16915225429. The reversal of 16915225425 is 52452251961.

It is an interprime number because it is at equal distance from previous prime (16915225421) and next prime (16915225429).

It is not a de Polignac number, because 16915225425 - 2² = 16915225421 is a prime.

It is a super-2 number, since 2×16915225425² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (16915225421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 8791 + ... + 184140.

It is an arithmetic number, because the mean of its divisors is an integer number (669859904).

Almost surely, 2^16915225425 is an apocalyptic number.

16915225425 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16915225425 is a deficient number, since it is larger than the sum of its proper divisors (15238049967).

16915225425 is a wasteful number, since it uses less digits than its factorization.

16915225425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193118 (or 193113 counting only the distinct ones).

The product of its digits is 216000, while the sum is 42.

The spelling of 16915225425 in words is "sixteen billion, nine hundred fifteen million, two hundred twenty-five thousand, four hundred twenty-five".