124400401225 has 12 divisors (see below), whose sum is σ = 154407612940. Its totient is φ = 99422827200.

The previous prime is 124400401199. The next prime is 124400401273. The reversal of 124400401225 is 522104004421.

It can be written as a sum of positive squares in 6 ways, for example, as 2230578441 + 122169822784 = 47229^2 + 349528^2 .

It is not a de Polignac number, because 124400401225 - 2¹⁵ = 124400368457 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a self number, because there is not a number n which added to its sum of digits gives 124400401225.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2411310 + ... + 2462359.

Almost surely, 2^124400401225 is an apocalyptic number.

It is an amenable number.

124400401225 is a deficient number, since it is larger than the sum of its proper divisors (30007211715).

124400401225 is a wasteful number, since it uses less digits than its factorization.

124400401225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4874700 (or 4874695 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 25.

Adding to 124400401225 its reverse (522104004421), we get a palindrome (646504405646).

It can be divided in two parts, 124400 and 401225, that added together give a square (525625 = 725²).

The spelling of 124400401225 in words is "one hundred twenty-four billion, four hundred million, four hundred one thousand, two hundred twenty-five".