125432305 has 4 divisors (see below), whose sum is σ = 150518772. Its totient is φ = 100345840.

The previous prime is 125432297. The next prime is 125432311. The reversal of 125432305 is 503234521.

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 75064896 + 50367409 = 8664^2 + 7097^2 .

It is not a de Polignac number, because 125432305 - 2³ = 125432297 is a prime.

It is a super-2 number, since 2×125432305² = 31466526275226050, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 125432305.

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, 12543226 + ... + 12543235.

It is an arithmetic number, because the mean of its divisors is an integer number (37629693).

Almost surely, 2^125432305 is an apocalyptic number.

It is an amenable number.

125432305 is a deficient number, since it is larger than the sum of its proper divisors (25086467).

125432305 is an equidigital number, since it uses as much as digits as its factorization.

125432305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25086466.

The product of its (nonzero) digits is 3600, while the sum is 25.

The square root of 125432305 is about 11199.6564679458. The cubic root of 125432305 is about 500.5757434512.

Adding to 125432305 its reverse (503234521), we get a palindrome (628666826).

The spelling of 125432305 in words is "one hundred twenty-five million, four hundred thirty-two thousand, three hundred five".