425505772537 has 4 divisors (see below), whose sum is σ = 425507620176. Its totient is φ = 425503924900.

The previous prime is 425505772529. The next prime is 425505772577. The reversal of 425505772537 is 735277505524.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 425505772537 - 2³ = 425505772529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (425505772577) 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, 519343 + ... + 1058644.

It is an arithmetic number, because the mean of its divisors is an integer number (106376905044).

Almost surely, 2^425505772537 is an apocalyptic number.

It is an amenable number.

425505772537 is a deficient number, since it is larger than the sum of its proper divisors (1847639).

425505772537 is a wasteful number, since it uses less digits than its factorization.

425505772537 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1847638.

The product of its (nonzero) digits is 10290000, while the sum is 52.

The spelling of 425505772537 in words is "four hundred twenty-five billion, five hundred five million, seven hundred seventy-two thousand, five hundred thirty-seven".