425634553 has 4 divisors (see below), whose sum is σ = 425677648. Its totient is φ = 425591460.

The previous prime is 425634529. The next prime is 425634577. The reversal of 425634553 is 355436524.

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, and also a brilliant number, because the two primes have the same length.

It is an interprime number because it is at equal distance from previous prime (425634529) and next prime (425634577).

It is a cyclic number.

It is not a de Polignac number, because 425634553 - 2²⁵ = 392080121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (425674553) 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, 1450 + ... + 29212.

It is an arithmetic number, because the mean of its divisors is an integer number (106419412).

Almost surely, 2^425634553 is an apocalyptic number.

It is an amenable number.

425634553 is a deficient number, since it is larger than the sum of its proper divisors (43095).

425634553 is a wasteful number, since it uses less digits than its factorization.

425634553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43094.

The product of its digits is 216000, while the sum is 37.

The square root of 425634553 is about 20630.9125585855. The cubic root of 425634553 is about 752.2212978786.

It can be divided in two parts, 4256 and 34553, that added together give a square (38809 = 197²).

The spelling of 425634553 in words is "four hundred twenty-five million, six hundred thirty-four thousand, five hundred fifty-three".