125465840 has 80 divisors (see below), whose sum is σ = 300837888. Its totient is φ = 48642048.

The previous prime is 125465839. The next prime is 125465869. The reversal of 125465840 is 48564521.

It is a tau number, because it is divible by the number of its divisors (80).

It is a self number, because there is not a number n which added to its sum of digits gives 125465840.

It is a congruent number.

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, 538364 + ... + 538596.

Almost surely, 2^125465840 is an apocalyptic number.

125465840 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 125465840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (150418944).

125465840 is an abundant number, since it is smaller than the sum of its proper divisors (175372048).

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

125465840 is a wasteful number, since it uses less digits than its factorization.

125465840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 426 (or 420 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 35.

The square root of 125465840 is about 11201.1535120272. The cubic root of 125465840 is about 500.6203500134.

The spelling of 125465840 in words is "one hundred twenty-five million, four hundred sixty-five thousand, eight hundred forty".