125440545 has 32 divisors (see below), whose sum is σ = 208811520. Its totient is φ = 64247040.

The previous prime is 125440541. The next prime is 125440571. The reversal of 125440545 is 545044521.

It is not a de Polignac number, because 125440545 - 2² = 125440541 is a prime.

It is not an unprimeable number, because it can be changed into a prime (125440541) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 42415 + ... + 45275.

It is an arithmetic number, because the mean of its divisors is an integer number (6525360).

Almost surely, 2^125440545 is an apocalyptic number.

125440545 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

125440545 is a deficient number, since it is larger than the sum of its proper divisors (83370975).

125440545 is a wasteful number, since it uses less digits than its factorization.

125440545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2985.

The product of its (nonzero) digits is 16000, while the sum is 30.

The square root of 125440545 is about 11200.0243303307. The cubic root of 125440545 is about 500.5867046194.

The spelling of 125440545 in words is "one hundred twenty-five million, four hundred forty thousand, five hundred forty-five".