20425701 has 8 divisors (see below), whose sum is σ = 27264640. Its totient is φ = 13601952.

The previous prime is 20425697. The next prime is 20425709. The reversal of 20425701 is 10752402.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20425701 - 2² = 20425697 is a prime.

It is a super-2 number, since 2×20425701² = 834418522682802, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20425709) 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, 160 + ... + 6393.

It is an arithmetic number, because the mean of its divisors is an integer number (3408080).

Almost surely, 2^20425701 is an apocalyptic number.

It is an amenable number.

20425701 is a deficient number, since it is larger than the sum of its proper divisors (6838939).

20425701 is a wasteful number, since it uses less digits than its factorization.

20425701 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7595.

The product of its (nonzero) digits is 560, while the sum is 21.

The square root of 20425701 is about 4519.4801692230. The cubic root of 20425701 is about 273.3541406263.

The spelling of 20425701 in words is "twenty million, four hundred twenty-five thousand, seven hundred one".