20425295731 has 2 divisors, whose sum is σ = 20425295732. Its totient is φ = 20425295730.

The previous prime is 20425295707. The next prime is 20425295741. The reversal of 20425295731 is 13759252402.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20425295731 is a prime.

It is a super-2 number, since 2×20425295731² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20425295741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10212647865 + 10212647866.

It is an arithmetic number, because the mean of its divisors is an integer number (10212647866).

Almost surely, 2^20425295731 is an apocalyptic number.

20425295731 is a deficient number, since it is larger than the sum of its proper divisors (1).

20425295731 is an equidigital number, since it uses as much as digits as its factorization.

20425295731 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 151200, while the sum is 40.

The spelling of 20425295731 in words is "twenty billion, four hundred twenty-five million, two hundred ninety-five thousand, seven hundred thirty-one".