131554525 has 6 divisors (see below), whose sum is σ = 163127642. Its totient is φ = 105243600.

The previous prime is 131554519. The next prime is 131554543. The reversal of 131554525 is 525455131.

It can be written as a sum of positive squares in 3 ways, for example, as 22686169 + 108868356 = 4763^2 + 10434^2 .

It is a de Polignac number, because none of the positive numbers 2^k-131554525 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2631066 + ... + 2631115.

Almost surely, 2^131554525 is an apocalyptic number.

It is an amenable number.

131554525 is a deficient number, since it is larger than the sum of its proper divisors (31573117).

131554525 is an equidigital number, since it uses as much as digits as its factorization.

131554525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5262191 (or 5262186 counting only the distinct ones).

The product of its digits is 15000, while the sum is 31.

The square root of 131554525 is about 11469.7220977668. The cubic root of 131554525 is about 508.5909136815.

The spelling of 131554525 in words is "one hundred thirty-one million, five hundred fifty-four thousand, five hundred twenty-five".