20452925 has 12 divisors (see below), whose sum is σ = 25513620. Its totient is φ = 16264320.

The previous prime is 20452879. The next prime is 20452931. The reversal of 20452925 is 52925402.

It can be written as a sum of positive squares in 6 ways, for example, as 996004 + 19456921 = 998^2 + 4411^2 .

It is not a de Polignac number, because 20452925 - 2⁸ = 20452669 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1961 + ... + 6689.

It is an arithmetic number, because the mean of its divisors is an integer number (2126135).

Almost surely, 2^20452925 is an apocalyptic number.

20452925 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20452925 is a deficient number, since it is larger than the sum of its proper divisors (5060695).

20452925 is a wasteful number, since it uses less digits than its factorization.

20452925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4912 (or 4907 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 29.

The square root of 20452925 is about 4522.4910171276. The cubic root of 20452925 is about 273.4755316352.

The spelling of 20452925 in words is "twenty million, four hundred fifty-two thousand, nine hundred twenty-five".