125495540 has 24 divisors (see below), whose sum is σ = 265877640. Its totient is φ = 49753088.

The previous prime is 125495519. The next prime is 125495561. The reversal of 125495540 is 45594521.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (125495519) and next prime (125495561).

It can be written as a sum of positive squares in 4 ways, for example, as 15413476 + 110082064 = 3926^2 + 10492^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 125495540.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25505 + ... + 30024.

It is an arithmetic number, because the mean of its divisors is an integer number (11078235).

Almost surely, 2^125495540 is an apocalyptic number.

125495540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

125495540 is an abundant number, since it is smaller than the sum of its proper divisors (140382100).

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

125495540 is a wasteful number, since it uses less digits than its factorization.

125495540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55651 (or 55649 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 35.

The square root of 125495540 is about 11202.4791898936. The cubic root of 125495540 is about 500.6598488160.

The spelling of 125495540 in words is "one hundred twenty-five million, four hundred ninety-five thousand, five hundred forty".