20225023151 has 4 divisors (see below), whose sum is σ = 20509882704. Its totient is φ = 19940163600.

The previous prime is 20225023123. The next prime is 20225023153. The reversal of 20225023151 is 15132052202.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 15132052202 = 2 ⋅7566026101.

It is a cyclic number.

It is not a de Polignac number, because 20225023151 - 2⁶ = 20225023087 is a prime.

It is a super-2 number, since 2×20225023151² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20225023153) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 142429670 + ... + 142429811.

It is an arithmetic number, because the mean of its divisors is an integer number (5127470676).

Almost surely, 2^20225023151 is an apocalyptic number.

20225023151 is a deficient number, since it is larger than the sum of its proper divisors (284859553).

20225023151 is an equidigital number, since it uses as much as digits as its factorization.

20225023151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 284859552.

The product of its (nonzero) digits is 1200, while the sum is 23.

Adding to 20225023151 its reverse (15132052202), we get a palindrome (35357075353).

The spelling of 20225023151 in words is "twenty billion, two hundred twenty-five million, twenty-three thousand, one hundred fifty-one".