20525954 has 4 divisors (see below), whose sum is σ = 30788934. Its totient is φ = 10262976.

The previous prime is 20525941. The next prime is 20525971. The reversal of 20525954 is 45952502.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 45952502 = 2 ⋅22976251.

It can be written as a sum of positive squares in only one way, i.e., 19140625 + 1385329 = 4375^2 + 1177^2 .

It is a super-2 number, since 2×20525954² = 842629575220232, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20525954.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5131487 + ... + 5131490.

Almost surely, 2^20525954 is an apocalyptic number.

20525954 is a deficient number, since it is larger than the sum of its proper divisors (10262980).

20525954 is a wasteful number, since it uses less digits than its factorization.

20525954 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10262979.

The product of its (nonzero) digits is 18000, while the sum is 32.

The square root of 20525954 is about 4530.5578023021. The cubic root of 20525954 is about 273.8006346292.

The spelling of 20525954 in words is "twenty million, five hundred twenty-five thousand, nine hundred fifty-four".