125451120205 has 8 divisors (see below), whose sum is σ = 150550848504. Its totient is φ = 100354560000.

The previous prime is 125451120061. The next prime is 125451120227. The reversal of 125451120205 is 502021154521.

It can be written as a sum of positive squares in 4 ways, for example, as 53966542249 + 71484577956 = 232307^2 + 267366^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 125451120205 - 2²¹ = 125449023053 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 704016 + ... + 864025.

It is an arithmetic number, because the mean of its divisors is an integer number (18818856063).

Almost surely, 2^125451120205 is an apocalyptic number.

It is an amenable number.

125451120205 is a deficient number, since it is larger than the sum of its proper divisors (25099728299).

125451120205 is a wasteful number, since it uses less digits than its factorization.

125451120205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1584047.

The product of its (nonzero) digits is 4000, while the sum is 28.

Adding to 125451120205 its reverse (502021154521), we get a palindrome (627472274726).

The spelling of 125451120205 in words is "one hundred twenty-five billion, four hundred fifty-one million, one hundred twenty thousand, two hundred five".