20425270 has 16 divisors (see below), whose sum is σ = 36906048. Its totient is φ = 8138880.

The previous prime is 20425243. The next prime is 20425271. The reversal of 20425270 is 7252402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20425271) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1059 + ... + 6478.

It is an arithmetic number, because the mean of its divisors is an integer number (2306628).

Almost surely, 2^20425270 is an apocalyptic number.

20425270 is a deficient number, since it is larger than the sum of its proper divisors (16480778).

20425270 is a wasteful number, since it uses less digits than its factorization.

20425270 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7815.

The product of its (nonzero) digits is 1120, while the sum is 22.

The square root of 20425270 is about 4519.4324864965. The cubic root of 20425270 is about 273.3522179430.

Adding to 20425270 its reverse (7252402), we get a palindrome (27677672).

The spelling of 20425270 in words is "twenty million, four hundred twenty-five thousand, two hundred seventy".