1405125226 has 16 divisors (see below), whose sum is σ = 2185734600. Its totient is φ = 676666368.

The previous prime is 1405125199. The next prime is 1405125229. The reversal of 1405125226 is 6225215041.

It is a Cunningham number, because it is equal to 37485²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 1284147225 + 120978001 = 35835^2 + 10999^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1405125194 and 1405125203.

It is not an unprimeable number, because it can be changed into a prime (1405125229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5895 + ... + 53338.

Almost surely, 2^1405125226 is an apocalyptic number.

1405125226 is a deficient number, since it is larger than the sum of its proper divisors (780609374).

1405125226 is a wasteful number, since it uses less digits than its factorization.

1405125226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59673.

The product of its (nonzero) digits is 4800, while the sum is 28.

The square root of 1405125226 is about 37485.0000133387. Note that the first 4 decimals coincide. The cubic root of 1405125226 is about 1120.0524066677.

The spelling of 1405125226 in words is "one billion, four hundred five million, one hundred twenty-five thousand, two hundred twenty-six".