1051400225 has 6 divisors (see below), whose sum is σ = 1303736310. Its totient is φ = 841120160.

The previous prime is 1051400201. The next prime is 1051400227. The reversal of 1051400225 is 5220041501.

It can be written as a sum of positive squares in 3 ways, for example, as 374151649 + 677248576 = 19343^2 + 26024^2 .

It is not a de Polignac number, because 1051400225 - 2²⁶ = 984291361 is a prime.

It is a super-2 number, since 2×1051400225² = 2210884866260101250, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1051400197 and 1051400206.

It is not an unprimeable number, because it can be changed into a prime (1051400227) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 21027980 + ... + 21028029.

It is an arithmetic number, because the mean of its divisors is an integer number (217289385).

Almost surely, 2^1051400225 is an apocalyptic number.

It is an amenable number.

1051400225 is a deficient number, since it is larger than the sum of its proper divisors (252336085).

1051400225 is an equidigital number, since it uses as much as digits as its factorization.

1051400225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42056019 (or 42056014 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 20.

The square root of 1051400225 is about 32425.3022345205. The cubic root of 1051400225 is about 1016.8479604432.

Adding to 1051400225 its reverse (5220041501), we get a palindrome (6271441726).

The spelling of 1051400225 in words is "one billion, fifty-one million, four hundred thousand, two hundred twenty-five".