29949988125 has 20 divisors (see below), whose sum is σ = 49900676672. Its totient is φ = 15973326000.

The previous prime is 29949988111. The next prime is 29949988129. The reversal of 29949988125 is 52188994992.

It is not a de Polignac number, because 29949988125 - 2⁴ = 29949988109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29949988129) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 7984789 + ... + 7988538.

Almost surely, 2^29949988125 is an apocalyptic number.

29949988125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

29949988125 is a deficient number, since it is larger than the sum of its proper divisors (19950688547).

29949988125 is an equidigital number, since it uses as much as digits as its factorization.

29949988125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15973350 (or 15973335 counting only the distinct ones).

The product of its digits is 33592320, while the sum is 66.

The spelling of 29949988125 in words is "twenty-nine billion, nine hundred forty-nine million, nine hundred eighty-eight thousand, one hundred twenty-five".