20254997 has 12 divisors (see below), whose sum is σ = 23927328. Its totient is φ = 16795800.

The previous prime is 20254991. The next prime is 20254999. The reversal of 20254997 is 79945202.

It is not a de Polignac number, because 20254997 - 2⁴ = 20254981 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20254997.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20254991) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5222 + ... + 8232.

It is an arithmetic number, because the mean of its divisors is an integer number (1993944).

Almost surely, 2^20254997 is an apocalyptic number.

It is an amenable number.

20254997 is a deficient number, since it is larger than the sum of its proper divisors (3672331).

20254997 is an equidigital number, since it uses as much as digits as its factorization.

20254997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3080 (or 3049 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 38.

The square root of 20254997 is about 4500.5551879740. Note that the first 3 decimals coincide. The cubic root of 20254997 is about 272.5905072083.

The spelling of 20254997 in words is "twenty million, two hundred fifty-four thousand, nine hundred ninety-seven".