125513136 has 120 divisors (see below), whose sum is σ = 411369504. Its totient is φ = 34974720.

The previous prime is 125513099. The next prime is 125513147. The reversal of 125513136 is 631315521.

125513136 is a `hidden beast` number, since 12 + 5 + 513 + 136 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 39810 + ... + 42846.

Almost surely, 2^125513136 is an apocalyptic number.

125513136 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 125513136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (205684752).

125513136 is an abundant number, since it is smaller than the sum of its proper divisors (285856368).

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

125513136 is a wasteful number, since it uses less digits than its factorization.

125513136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3099 (or 3090 counting only the distinct ones).

The product of its digits is 2700, while the sum is 27.

The square root of 125513136 is about 11203.2645242358. The cubic root of 125513136 is about 500.6832472544.

Adding to 125513136 its reverse (631315521), we get a palindrome (756828657).

The spelling of 125513136 in words is "one hundred twenty-five million, five hundred thirteen thousand, one hundred thirty-six".