16425634531 has 4 divisors (see below), whose sum is σ = 16523991792. Its totient is φ = 16327277272.

The previous prime is 16425634451. The next prime is 16425634567. The reversal of 16425634531 is 13543652461.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 16425634531 - 2⁷ = 16425634403 is a prime.

It is a super-2 number, since 2×16425634531² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16425634831) 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, 49178380 + ... + 49178713.

It is an arithmetic number, because the mean of its divisors is an integer number (4130997948).

Almost surely, 2^16425634531 is an apocalyptic number.

16425634531 is a deficient number, since it is larger than the sum of its proper divisors (98357261).

16425634531 is an equidigital number, since it uses as much as digits as its factorization.

16425634531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98357260.

The product of its digits is 259200, while the sum is 40.

The spelling of 16425634531 in words is "sixteen billion, four hundred twenty-five million, six hundred thirty-four thousand, five hundred thirty-one".