425740025 has 18 divisors (see below), whose sum is σ = 531920010. Its totient is φ = 338028160.

The previous prime is 425739971. The next prime is 425740031. The reversal of 425740025 is 520047524.

It is a happy number.

It can be written as a sum of positive squares in 9 ways, for example, as 23697424 + 402042601 = 4868^2 + 20051^2 .

It is not a de Polignac number, because 425740025 - 2²² = 421545721 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 425740025.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 747941 + ... + 748509.

Almost surely, 2^425740025 is an apocalyptic number.

It is an amenable number.

425740025 is a deficient number, since it is larger than the sum of its proper divisors (106179985).

425740025 is an equidigital number, since it uses as much as digits as its factorization.

425740025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 925 (or 747 counting only the distinct ones).

The product of its (nonzero) digits is 11200, while the sum is 29.

The square root of 425740025 is about 20633.4685644465. The cubic root of 425740025 is about 752.2834260836.

Adding to 425740025 its reverse (520047524), we get a palindrome (945787549).

The spelling of 425740025 in words is "four hundred twenty-five million, seven hundred forty thousand, twenty-five".