29235870225 has 27 divisors (see below), whose sum is σ = 52369286203. Its totient is φ = 15591096240.

The previous prime is 29235870217. The next prime is 29235870227. The reversal of 29235870225 is 52207853292.

The square root of 29235870225 is 170985.

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

29235870225 is a `hidden beast` number, since 2 + 9 + 2 + 358 + 70 + 225 = 666.

It can be written as a sum of positive squares in only one way, i.e., 10524913281 + 18710956944 = 102591^2 + 136788^2 .

It is not a de Polignac number, because 29235870225 - 2³ = 29235870217 is a prime.

It is a super-2 number, since 2×29235870225² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (29235870227) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 2559076 + ... + 2570474.

Almost surely, 2^29235870225 is an apocalyptic number.

29235870225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

29235870225 is the 170985-th square number.

29235870225 is the 85493-rd centered octagonal number.

It is an amenable number.

29235870225 is a deficient number, since it is larger than the sum of its proper divisors (23133415978).

29235870225 is an frugal number, since it uses more digits than its factorization.

29235870225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22814 (or 11407 counting only the distinct ones).

The product of its (nonzero) digits is 604800, while the sum is 45.

The spelling of 29235870225 in words is "twenty-nine billion, two hundred thirty-five million, eight hundred seventy thousand, two hundred twenty-five".