20525955 has 8 divisors (see below), whose sum is σ = 32841552. Its totient is φ = 10947168.

The previous prime is 20525941. The next prime is 20525971. The reversal of 20525955 is 55952502.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20525955 - 2¹² = 20521859 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 684184 + ... + 684213.

It is an arithmetic number, because the mean of its divisors is an integer number (4105194).

Almost surely, 2^20525955 is an apocalyptic number.

20525955 is a deficient number, since it is larger than the sum of its proper divisors (12315597).

20525955 is a wasteful number, since it uses less digits than its factorization.

20525955 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1368405.

The product of its (nonzero) digits is 22500, while the sum is 33.

The square root of 20525955 is about 4530.5579126637. The cubic root of 20525955 is about 273.8006390756.

The spelling of 20525955 in words is "twenty million, five hundred twenty-five thousand, nine hundred fifty-five".