1255623425 has 12 divisors (see below), whose sum is σ = 1779398016. Its totient is φ = 860998800.

The previous prime is 1255623403. The next prime is 1255623461. The reversal of 1255623425 is 5243265521.

It is not a de Polignac number, because 1255623425 - 2⁶ = 1255623361 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3587321 + ... + 3587670.

It is an arithmetic number, because the mean of its divisors is an integer number (148283168).

Almost surely, 2^1255623425 is an apocalyptic number.

It is an amenable number.

1255623425 is a deficient number, since it is larger than the sum of its proper divisors (523774591).

1255623425 is an equidigital number, since it uses as much as digits as its factorization.

1255623425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7175008 (or 7175003 counting only the distinct ones).

The product of its digits is 72000, while the sum is 35.

The square root of 1255623425 is about 35434.7770558811. Note that the first 3 decimals coincide. The cubic root of 1255623425 is about 1078.8303022564.

Adding to 1255623425 its reverse (5243265521), we get a palindrome (6498888946).

The spelling of 1255623425 in words is "one billion, two hundred fifty-five million, six hundred twenty-three thousand, four hundred twenty-five".