1235140425 has 18 divisors (see below), whose sum is σ = 2212274142. Its totient is φ = 658741440.

The previous prime is 1235140399. The next prime is 1235140441. The reversal of 1235140425 is 5240415321.

1235140425 is a `hidden beast` number, since 1 + 235 + 1 + 4 + 0 + 425 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 127848249 + 1107292176 = 11307^2 + 33276^2 .

It is not a de Polignac number, because 1235140425 - 2⁵ = 1235140393 is a prime.

It is a Curzon number.

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, 2744532 + ... + 2744981.

It is an arithmetic number, because the mean of its divisors is an integer number (122904119).

Almost surely, 2^1235140425 is an apocalyptic number.

1235140425 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1235140425 is a deficient number, since it is larger than the sum of its proper divisors (977133717).

1235140425 is a wasteful number, since it uses less digits than its factorization.

1235140425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5489529 (or 5489521 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The square root of 1235140425 is about 35144.5646579951. The cubic root of 1235140425 is about 1072.9317869529.

Adding to 1235140425 its reverse (5240415321), we get a palindrome (6475555746).

The spelling of 1235140425 in words is "one billion, two hundred thirty-five million, one hundred forty thousand, four hundred twenty-five".