425513555 has 4 divisors (see below), whose sum is σ = 510616272. Its totient is φ = 340410840.

The previous prime is 425513507. The next prime is 425513581. The reversal of 425513555 is 555315524.

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

It is not a de Polignac number, because 425513555 - 2⁸ = 425513299 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42551351 + ... + 42551360.

It is an arithmetic number, because the mean of its divisors is an integer number (127654068).

Almost surely, 2^425513555 is an apocalyptic number.

425513555 is a deficient number, since it is larger than the sum of its proper divisors (85102717).

425513555 is an equidigital number, since it uses as much as digits as its factorization.

425513555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85102716.

The product of its digits is 75000, while the sum is 35.

The square root of 425513555 is about 20627.9799059433. The cubic root of 425513555 is about 752.1500114522.

The spelling of 425513555 in words is "four hundred twenty-five million, five hundred thirteen thousand, five hundred fifty-five".