20207025 has 18 divisors (see below), whose sum is σ = 36193430. Its totient is φ = 10776960.

The previous prime is 20207023. The next prime is 20207029. The reversal of 20207025 is 52070202.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 4809249 + 15397776 = 2193^2 + 3924^2 .

It is not a de Polignac number, because 20207025 - 2¹ = 20207023 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20206989 and 20207007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20207023) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 44680 + ... + 45129.

Almost surely, 2^20207025 is an apocalyptic number.

20207025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20207025 is a deficient number, since it is larger than the sum of its proper divisors (15986405).

20207025 is a wasteful number, since it uses less digits than its factorization.

20207025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89825 (or 89817 counting only the distinct ones).

The product of its (nonzero) digits is 280, while the sum is 18.

The square root of 20207025 is about 4495.2224639054. Note that the first 3 decimals coincide. The cubic root of 20207025 is about 272.3751356787.

Adding to 20207025 its reverse (52070202), we get a palindrome (72277227).

It can be divided in two parts, 2020 and 7025, that added together give a triangular number (9045 = T₁₃₄).

The spelling of 20207025 in words is "twenty million, two hundred seven thousand, twenty-five".