131225250 has 128 divisors (see below), whose sum is σ = 362089728. Its totient is φ = 31449600.

The previous prime is 131225231. The next prime is 131225251. The reversal of 131225250 is 52522131.

It is not an unprimeable number, because it can be changed into a prime (131225251) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 419094 + ... + 419406.

It is an arithmetic number, because the mean of its divisors is an integer number (2828826).

Almost surely, 2^131225250 is an apocalyptic number.

131225250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 131225250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (181044864).

131225250 is an abundant number, since it is smaller than the sum of its proper divisors (230864478).

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

131225250 is a wasteful number, since it uses less digits than its factorization.

131225250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 389 (or 379 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 131225250 is about 11455.3590079054. The cubic root of 131225250 is about 508.1662325138.

Adding to 131225250 its reverse (52522131), we get a palindrome (183747381).

It can be divided in two parts, 1312 and 25250, that added together give a palindrome (26562).

The spelling of 131225250 in words is "one hundred thirty-one million, two hundred twenty-five thousand, two hundred fifty".