131625406 has 8 divisors (see below), whose sum is σ = 215387064. Its totient is φ = 59829720.

The previous prime is 131625397. The next prime is 131625419. The reversal of 131625406 is 604526131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 2991465 + ... + 2991508.

It is an arithmetic number, because the mean of its divisors is an integer number (26923383).

Almost surely, 2^131625406 is an apocalyptic number.

131625406 is a deficient number, since it is larger than the sum of its proper divisors (83761658).

131625406 is a wasteful number, since it uses less digits than its factorization.

131625406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5982986.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 131625406 is about 11472.8115996036. The cubic root of 131625406 is about 508.6822394646.

The spelling of 131625406 in words is "one hundred thirty-one million, six hundred twenty-five thousand, four hundred six".