29880256025 has 36 divisors (see below), whose sum is σ = 38056864428. Its totient is φ = 23272260480.

The previous prime is 29880255997. The next prime is 29880256027. The reversal of 29880256025 is 52065208892.

It can be written as a sum of positive squares in 6 ways, for example, as 650199001 + 29230057024 = 25499^2 + 170968^2 .

It is not a de Polignac number, because 29880256025 - 2³⁰ = 28806514201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (29880256027) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 17241059 + ... + 17242791.

It is an arithmetic number, because the mean of its divisors is an integer number (1057135123).

Almost surely, 2^29880256025 is an apocalyptic number.

29880256025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

29880256025 is a deficient number, since it is larger than the sum of its proper divisors (8176608403).

29880256025 is a wasteful number, since it uses less digits than its factorization.

29880256025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2202 (or 2154 counting only the distinct ones).

The product of its (nonzero) digits is 691200, while the sum is 47.

The spelling of 29880256025 in words is "twenty-nine billion, eight hundred eighty million, two hundred fifty-six thousand, twenty-five".