12545631 has 32 divisors (see below), whose sum is σ = 21772800. Its totient is φ = 6989760.

The previous prime is 12545593. The next prime is 12545633. The reversal of 12545631 is 13654521.

12545631 is a `hidden beast` number, since 1 + 25 + 4 + 5 + 631 = 666.

It is not a de Polignac number, because 12545631 - 2¹⁰ = 12544607 is a prime.

It is a super-2 number, since 2×12545631² = 314785714376322, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 12545595 and 12545604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12545633) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6940 + ... + 8558.

It is an arithmetic number, because the mean of its divisors is an integer number (680400).

Almost surely, 2^12545631 is an apocalyptic number.

12545631 is a deficient number, since it is larger than the sum of its proper divisors (9227169).

12545631 is a wasteful number, since it uses less digits than its factorization.

12545631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1676 (or 1670 counting only the distinct ones).

The product of its digits is 3600, while the sum is 27.

The square root of 12545631 is about 3541.9812252467. The cubic root of 12545631 is about 232.3614991969.

The spelling of 12545631 in words is "twelve million, five hundred forty-five thousand, six hundred thirty-one".