1237426425 has 18 divisors (see below), whose sum is σ = 2216368622. Its totient is φ = 659960640.

The previous prime is 1237426423. The next prime is 1237426439. The reversal of 1237426425 is 5246247321.

1237426425 is a `hidden beast` number, since 1 + 2 + 3 + 7 + 4 + 2 + 642 + 5 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 308213136 + 929213289 = 17556^2 + 30483^2 .

It is not a de Polignac number, because 1237426425 - 2¹ = 1237426423 is a prime.

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 1237426425.

It is not an unprimeable number, because it can be changed into a prime (1237426423) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 2749612 + ... + 2750061.

Almost surely, 2^1237426425 is an apocalyptic number.

1237426425 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1237426425 is a deficient number, since it is larger than the sum of its proper divisors (978942197).

1237426425 is a wasteful number, since it uses less digits than its factorization.

1237426425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5499689 (or 5499681 counting only the distinct ones).

The product of its digits is 80640, while the sum is 36.

The square root of 1237426425 is about 35177.0724336179. The cubic root of 1237426425 is about 1073.5933069987.

The spelling of 1237426425 in words is "one billion, two hundred thirty-seven million, four hundred twenty-six thousand, four hundred twenty-five".