20065725 has 48 divisors (see below), whose sum is σ = 37418240. Its totient is φ = 10672560.

The previous prime is 20065657. The next prime is 20065733. The reversal of 20065725 is 52756002.

20065725 is a `hidden beast` number, since 2 + 0 + 0 + 657 + 2 + 5 = 666.

It is not a de Polignac number, because 20065725 - 2⁷ = 20065597 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

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, 54492 + ... + 54858.

Almost surely, 2^20065725 is an apocalyptic number.

20065725 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20065725 is a deficient number, since it is larger than the sum of its proper divisors (17352515).

20065725 is an frugal number, since it uses more digits than its factorization.

20065725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 398 (or 375 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 27.

The square root of 20065725 is about 4479.4782062200. The cubic root of 20065725 is about 271.7387783694.

The spelling of 20065725 in words is "twenty million, sixty-five thousand, seven hundred twenty-five".