12400425351 has 24 divisors (see below), whose sum is σ = 19174331904. Its totient is φ = 8000269560.

The previous prime is 12400425329. The next prime is 12400425371. The reversal of 12400425351 is 15352400421.

12400425351 is a `hidden beast` number, since 1 + 2 + 400 + 4 + 253 + 5 + 1 = 666.

It is not a de Polignac number, because 12400425351 - 2¹⁴ = 12400408967 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12400425371) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 815541 + ... + 830606.

It is an arithmetic number, because the mean of its divisors is an integer number (798930496).

Almost surely, 2^12400425351 is an apocalyptic number.

12400425351 is a deficient number, since it is larger than the sum of its proper divisors (6773906553).

12400425351 is an equidigital number, since it uses as much as digits as its factorization.

12400425351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1646193 (or 1646181 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

Adding to 12400425351 its reverse (15352400421), we get a palindrome (27752825772).

The spelling of 12400425351 in words is "twelve billion, four hundred million, four hundred twenty-five thousand, three hundred fifty-one".