29220525 has 36 divisors (see below), whose sum is σ = 53220180. Its totient is φ = 15321600.

The previous prime is 29220493. The next prime is 29220551. The reversal of 29220525 is 52502292.

It can be written as a sum of positive squares in 6 ways, for example, as 8590761 + 20629764 = 2931^2 + 4542^2 .

It is not a de Polignac number, because 29220525 - 2⁵ = 29220493 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 12661 + ... + 14789.

Almost surely, 2^29220525 is an apocalyptic number.

29220525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

29220525 is a deficient number, since it is larger than the sum of its proper divisors (23999655).

29220525 is a wasteful number, since it uses less digits than its factorization.

29220525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2206 (or 2198 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 29220525 is about 5405.6012616544. The cubic root of 29220525 is about 308.0084785713.

It can be divided in two parts, 292205 and 25, that added together give a triangular number (292230 = T₇₆₄).

The spelling of 29220525 in words is "twenty-nine million, two hundred twenty thousand, five hundred twenty-five".