1425714257 has 16 divisors (see below), whose sum is σ = 1590736320. Its totient is φ = 1266782400.

The previous prime is 1425714253. The next prime is 1425714259. The reversal of 1425714257 is 7524175241.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1425714257 - 2² = 1425714253 is a prime.

It is a super-2 number, since 2×1425714257² = 4065322285226124098, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1425714257.

It is not an unprimeable number, because it can be changed into a prime (1425714253) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 152282 + ... + 161372.

It is an arithmetic number, because the mean of its divisors is an integer number (99421020).

Almost surely, 2^1425714257 is an apocalyptic number.

It is an amenable number.

1425714257 is a deficient number, since it is larger than the sum of its proper divisors (165022063).

1425714257 is a wasteful number, since it uses less digits than its factorization.

1425714257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9424.

The product of its digits is 78400, while the sum is 38.

The square root of 1425714257 is about 37758.6315562415. The cubic root of 1425714257 is about 1125.4965398558.

Adding to 1425714257 its reverse (7524175241), we get a palindrome (8949889498).

The spelling of 1425714257 in words is "one billion, four hundred twenty-five million, seven hundred fourteen thousand, two hundred fifty-seven".