15125940 has 60 divisors (see below), whose sum is σ = 47455716. Its totient is φ = 4033152.

The previous prime is 15125939. The next prime is 15125947. The reversal of 15125940 is 4952151.

It can be written as a sum of positive squares in 2 ways, for example, as 10614564 + 4511376 = 3258^2 + 2124^2 .

It is a tau number, because it is divible by the number of its divisors (60).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15125947) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 3049 + ... + 6288.

Almost surely, 2^15125940 is an apocalyptic number.

15125940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15125940 is an abundant number, since it is smaller than the sum of its proper divisors (32329776).

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

15125940 is a wasteful number, since it uses less digits than its factorization.

15125940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9358 (or 9347 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 27.

The square root of 15125940 is about 3889.2081456255. The cubic root of 15125940 is about 247.3094952764.

The spelling of 15125940 in words is "fifteen million, one hundred twenty-five thousand, nine hundred forty".