125457440 has 24 divisors (see below), whose sum is σ = 296393580. Its totient is φ = 50182912.

The previous prime is 125457439. The next prime is 125457443. The reversal of 125457440 is 44754521.

It can be written as a sum of positive squares in 2 ways, for example, as 120912016 + 4545424 = 10996^2 + 2132^2 .

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a junction number, because it is equal to n+sod(n) for n = 125457397 and 125457406.

It is not an unprimeable number, because it can be changed into a prime (125457443) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 391895 + ... + 392214.

Almost surely, 2^125457440 is an apocalyptic number.

125457440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

125457440 is an abundant number, since it is smaller than the sum of its proper divisors (170936140).

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

125457440 is an equidigital number, since it uses as much as digits as its factorization.

125457440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 784124 (or 784116 counting only the distinct ones).

The product of its (nonzero) digits is 22400, while the sum is 32.

The square root of 125457440 is about 11200.7785443691. The cubic root of 125457440 is about 500.6091775041.

The spelling of 125457440 in words is "one hundred twenty-five million, four hundred fifty-seven thousand, four hundred forty".