425256551 has 8 divisors (see below), whose sum is σ = 450651600. Its totient is φ = 400576960.

The previous prime is 425256539. The next prime is 425256563. The reversal of 425256551 is 155652524.

It is an interprime number because it is at equal distance from previous prime (425256539) and next prime (425256563).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-425256551 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (455256551) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 177641 + ... + 180018.

It is an arithmetic number, because the mean of its divisors is an integer number (56331450).

Almost surely, 2^425256551 is an apocalyptic number.

425256551 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

425256551 is a deficient number, since it is larger than the sum of its proper divisors (25395049).

425256551 is a wasteful number, since it uses less digits than its factorization.

425256551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 357729.

The product of its digits is 60000, while the sum is 35.

The square root of 425256551 is about 20621.7494650672. The cubic root of 425256551 is about 751.9985517316.

The spelling of 425256551 in words is "four hundred twenty-five million, two hundred fifty-six thousand, five hundred fifty-one".