425021211551 has 4 divisors (see below), whose sum is σ = 428367835392. Its totient is φ = 421674587712.

The previous prime is 425021211541. The next prime is 425021211583. The reversal of 425021211551 is 155112120524.

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

It is a cyclic number.

It is not a de Polignac number, because 425021211551 - 2¹⁰ = 425021210527 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 (425021211541) 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, 1673311730 + ... + 1673311983.

It is an arithmetic number, because the mean of its divisors is an integer number (107091958848).

Almost surely, 2^425021211551 is an apocalyptic number.

425021211551 is a deficient number, since it is larger than the sum of its proper divisors (3346623841).

425021211551 is a wasteful number, since it uses less digits than its factorization.

425021211551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3346623840.

The product of its (nonzero) digits is 4000, while the sum is 29.

The spelling of 425021211551 in words is "four hundred twenty-five billion, twenty-one million, two hundred eleven thousand, five hundred fifty-one".