20465025 has 48 divisors (see below), whose sum is σ = 40961664. Its totient is φ = 8801280.

The previous prime is 20464987. The next prime is 20465041. The reversal of 20465025 is 52056402.

It is not a de Polignac number, because 20465025 - 2¹⁷ = 20333953 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 20464986 and 20465004.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 7779 + ... + 10071.

It is an arithmetic number, because the mean of its divisors is an integer number (853368).

Almost surely, 2^20465025 is an apocalyptic number.

20465025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20465025 is an abundant number, since it is smaller than the sum of its proper divisors (20496639).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20465025 is a wasteful number, since it uses less digits than its factorization.

20465025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2330 (or 2325 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 20465025 is about 4523.8285776541. The cubic root of 20465025 is about 273.5294505995.

The spelling of 20465025 in words is "twenty million, four hundred sixty-five thousand, twenty-five".