125435645 has 4 divisors (see below), whose sum is σ = 150522780. Its totient is φ = 100348512.

The previous prime is 125435633. The next prime is 125435669. The reversal of 125435645 is 546534521.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 28334329 + 97101316 = 5323^2 + 9854^2 .

It is a cyclic number.

It is not a de Polignac number, because 125435645 - 2¹⁶ = 125370109 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12543560 + ... + 12543569.

It is an arithmetic number, because the mean of its divisors is an integer number (37630695).

Almost surely, 2^125435645 is an apocalyptic number.

It is an amenable number.

125435645 is a deficient number, since it is larger than the sum of its proper divisors (25087135).

125435645 is an equidigital number, since it uses as much as digits as its factorization.

125435645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25087134.

The product of its digits is 72000, while the sum is 35.

The square root of 125435645 is about 11199.8055786697. The cubic root of 125435645 is about 500.5801865068.

The spelling of 125435645 in words is "one hundred twenty-five million, four hundred thirty-five thousand, six hundred forty-five".