125616550 has 12 divisors (see below), whose sum is σ = 233646876. Its totient is φ = 50246600.

The previous prime is 125616539. The next prime is 125616551. The reversal of 125616550 is 55616521.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125616551) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1256116 + ... + 1256215.

It is an arithmetic number, because the mean of its divisors is an integer number (19470573).

Almost surely, 2^125616550 is an apocalyptic number.

125616550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

125616550 is a deficient number, since it is larger than the sum of its proper divisors (108030326).

125616550 is a wasteful number, since it uses less digits than its factorization.

125616550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2512343 (or 2512338 counting only the distinct ones).

The product of its (nonzero) digits is 9000, while the sum is 31.

The square root of 125616550 is about 11207.8789251134. The cubic root of 125616550 is about 500.8207187710.

The spelling of 125616550 in words is "one hundred twenty-five million, six hundred sixteen thousand, five hundred fifty".