125515650 has 96 divisors (see below), whose sum is σ = 337978368. Its totient is φ = 30643200.

The previous prime is 125515639. The next prime is 125515657. The reversal of 125515650 is 56515521.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (125515657) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 372282 + ... + 372618.

It is an arithmetic number, because the mean of its divisors is an integer number (3520608).

Almost surely, 2^125515650 is an apocalyptic number.

125515650 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 125515650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (168989184).

125515650 is an abundant number, since it is smaller than the sum of its proper divisors (212462718).

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

125515650 is a wasteful number, since it uses less digits than its factorization.

125515650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 556 (or 551 counting only the distinct ones).

The product of its (nonzero) digits is 7500, while the sum is 30.

The square root of 125515650 is about 11203.3767231134. The cubic root of 125515650 is about 500.6865900899.

The spelling of 125515650 in words is "one hundred twenty-five million, five hundred fifteen thousand, six hundred fifty".