29892681025 has 27 divisors (see below), whose sum is σ = 37477681353. Its totient is φ = 23652036000.

The previous prime is 29892680959. The next prime is 29892681041. The reversal of 29892681025 is 52018629892.

The square root of 29892681025 is 172895.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 4079760129 + 25812920896 = 63873^2 + 160664^2 .

It is not a de Polignac number, because 29892681025 - 2⁷ = 29892680897 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 130535611 + ... + 130535839.

Almost surely, 2^29892681025 is an apocalyptic number.

29892681025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

29892681025 is the 172895-th square number.

29892681025 is the 86448-th centered octagonal number.

It is an amenable number.

29892681025 is a deficient number, since it is larger than the sum of its proper divisors (7585000328).

29892681025 is an frugal number, since it uses more digits than its factorization.

29892681025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 770 (or 385 counting only the distinct ones).

The product of its (nonzero) digits is 1244160, while the sum is 52.

The spelling of 29892681025 in words is "twenty-nine billion, eight hundred ninety-two million, six hundred eighty-one thousand, twenty-five".