131136225 has 48 divisors (see below), whose sum is σ = 246841344. Its totient is φ = 60808000.

The previous prime is 131136211. The next prime is 131136259. The reversal of 131136225 is 522631131.

It is not a de Polignac number, because 131136225 - 2⁴ = 131136209 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 131136195 and 131136204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 15520 + ... + 22430.

It is an arithmetic number, because the mean of its divisors is an integer number (5142528).

Almost surely, 2^131136225 is an apocalyptic number.

131136225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

131136225 is a deficient number, since it is larger than the sum of its proper divisors (115705119).

131136225 is a wasteful number, since it uses less digits than its factorization.

131136225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6958 (or 6953 counting only the distinct ones).

The product of its digits is 1080, while the sum is 24.

The square root of 131136225 is about 11451.4726127254. The cubic root of 131136225 is about 508.0512908821.

Adding to 131136225 its reverse (522631131), we get a palindrome (653767356).

The spelling of 131136225 in words is "one hundred thirty-one million, one hundred thirty-six thousand, two hundred twenty-five".