125618420 has 24 divisors (see below), whose sum is σ = 264039048. Its totient is φ = 50201600.

The previous prime is 125618419. The next prime is 125618431. The reversal of 125618420 is 24816521.

It can be written as a sum of positive squares in 4 ways, for example, as 42042256 + 83576164 = 6484^2 + 9142^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27500 + ... + 31740.

It is an arithmetic number, because the mean of its divisors is an integer number (11001627).

Almost surely, 2^125618420 is an apocalyptic number.

125618420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

125618420 is an abundant number, since it is smaller than the sum of its proper divisors (138420628).

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

125618420 is a wasteful number, since it uses less digits than its factorization.

125618420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5731 (or 5729 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 29.

The square root of 125618420 is about 11207.9623482594. The cubic root of 125618420 is about 500.8232039268.

The spelling of 125618420 in words is "one hundred twenty-five million, six hundred eighteen thousand, four hundred twenty".