20425252215 has 16 divisors (see below), whose sum is σ = 32980226400. Its totient is φ = 10793526912.

The previous prime is 20425252213. The next prime is 20425252217. The reversal of 20425252215 is 51225252402.

It is an interprime number because it is at equal distance from previous prime (20425252213) and next prime (20425252217).

It is not a de Polignac number, because 20425252215 - 2¹ = 20425252213 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20425252213) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6244620 + ... + 6247889.

It is an arithmetic number, because the mean of its divisors is an integer number (2061264150).

Almost surely, 2^20425252215 is an apocalyptic number.

20425252215 is a deficient number, since it is larger than the sum of its proper divisors (12554974185).

20425252215 is a wasteful number, since it uses less digits than its factorization.

20425252215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12492626.

The product of its (nonzero) digits is 16000, while the sum is 30.

The spelling of 20425252215 in words is "twenty billion, four hundred twenty-five million, two hundred fifty-two thousand, two hundred fifteen".