125235131520 has 128 divisors (see below), whose sum is σ = 400339506240. Its totient is φ = 33299615744.

The previous prime is 125235131507. The next prime is 125235131533. The reversal of 125235131520 is 25131532521.

It is an interprime number because it is at equal distance from previous prime (125235131507) and next prime (125235131533).

It is a tau number, because it is divible by the number of its divisors (128).

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

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 572254 + ... + 760226.

Almost surely, 2^125235131520 is an apocalyptic number.

125235131520 is a gapful number since it is divisible by the number (10) 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 125235131520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (200169753120).

125235131520 is an abundant number, since it is smaller than the sum of its proper divisors (275104374720).

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

125235131520 is a wasteful number, since it uses less digits than its factorization.

125235131520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188342 (or 188330 counting only the distinct ones).

The product of its (nonzero) digits is 9000, while the sum is 30.

The spelling of 125235131520 in words is "one hundred twenty-five billion, two hundred thirty-five million, one hundred thirty-one thousand, five hundred twenty".