125522540 has 48 divisors (see below), whose sum is σ = 309687840. Its totient is φ = 42132480.

The previous prime is 125522521. The next prime is 125522549. The reversal of 125522540 is 45225521.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is not an unprimeable number, because it can be changed into a prime (125522549) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19085 + ... + 24804.

It is an arithmetic number, because the mean of its divisors is an integer number (6451830).

Almost surely, 2^125522540 is an apocalyptic number.

125522540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

125522540 is an abundant number, since it is smaller than the sum of its proper divisors (184165300).

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

125522540 is a wasteful number, since it uses less digits than its factorization.

125522540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43922 (or 43920 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 26.

The square root of 125522540 is about 11203.6842154713. The cubic root of 125522540 is about 500.6957514109.

The spelling of 125522540 in words is "one hundred twenty-five million, five hundred twenty-two thousand, five hundred forty".