131225016 has 32 divisors (see below), whose sum is σ = 353298960. Its totient is φ = 40376832.

The previous prime is 131225011. The next prime is 131225041. The reversal of 131225016 is 610522131.

It is a junction number, because it is equal to n+sod(n) for n = 131224983 and 131225001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131225011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 209985 + ... + 210608.

Almost surely, 2^131225016 is an apocalyptic number.

It is an amenable number.

131225016 is an abundant number, since it is smaller than the sum of its proper divisors (222073944).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

131225016 is a wasteful number, since it uses less digits than its factorization.

131225016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 420615 (or 420611 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 131225016 is about 11455.3487943406. The cubic root of 131225016 is about 508.1659304607.

Adding to 131225016 its reverse (610522131), we get a palindrome (741747147).

The spelling of 131225016 in words is "one hundred thirty-one million, two hundred twenty-five thousand, sixteen".