125345550 has 48 divisors (see below), whose sum is σ = 339121152. Its totient is φ = 30386400.

The previous prime is 125345501. The next prime is 125345557. The reversal of 125345550 is 55543521.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125345557) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 36334 + ... + 39633.

It is an arithmetic number, because the mean of its divisors is an integer number (7065024).

Almost surely, 2^125345550 is an apocalyptic number.

125345550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

125345550 is an abundant number, since it is smaller than the sum of its proper divisors (213775602).

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

125345550 is a wasteful number, since it uses less digits than its factorization.

125345550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75993 (or 75988 counting only the distinct ones).

The product of its (nonzero) digits is 15000, while the sum is 30.

The square root of 125345550 is about 11195.7826881375. The cubic root of 125345550 is about 500.4603094337.

The spelling of 125345550 in words is "one hundred twenty-five million, three hundred forty-five thousand, five hundred fifty".