16151921025 has 24 divisors (see below), whose sum is σ = 26757662400. Its totient is φ = 8597211840.

The previous prime is 16151921003. The next prime is 16151921213. The reversal of 16151921025 is 52012915161.

It is not a de Polignac number, because 16151921025 - 2²¹ = 16149823873 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 176350 + ... + 251799.

It is an arithmetic number, because the mean of its divisors is an integer number (1114902600).

Almost surely, 2^16151921025 is an apocalyptic number.

16151921025 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16151921025 is a deficient number, since it is larger than the sum of its proper divisors (10605741375).

16151921025 is a wasteful number, since it uses less digits than its factorization.

16151921025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 428665 (or 428660 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 33.

The spelling of 16151921025 in words is "sixteen billion, one hundred fifty-one million, nine hundred twenty-one thousand, twenty-five".