1425187537 has 4 divisors (see below), whose sum is σ = 1509022116. Its totient is φ = 1341352960.

The previous prime is 1425187529. The next prime is 1425187559. The reversal of 1425187537 is 7357815241.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1194117136 + 231070401 = 34556^2 + 15201^2 .

It is a cyclic number.

It is not a de Polignac number, because 1425187537 - 2³ = 1425187529 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1425187493 and 1425187502.

It is not an unprimeable number, because it can be changed into a prime (1425187507) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41917264 + ... + 41917297.

It is an arithmetic number, because the mean of its divisors is an integer number (377255529).

Almost surely, 2^1425187537 is an apocalyptic number.

1425187537 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

1425187537 is a deficient number, since it is larger than the sum of its proper divisors (83834579).

1425187537 is an equidigital number, since it uses as much as digits as its factorization.

1425187537 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83834578.

The product of its digits is 235200, while the sum is 43.

The square root of 1425187537 is about 37751.6560828793. The cubic root of 1425187537 is about 1125.3579205511.

The spelling of 1425187537 in words is "one billion, four hundred twenty-five million, one hundred eighty-seven thousand, five hundred thirty-seven".