242551405425 has 48 divisors (see below), whose sum is σ = 458351913600. Its totient is φ = 110869693440.

The previous prime is 242551405423. The next prime is 242551405433. The reversal of 242551405425 is 524504155242.

It is not a de Polignac number, because 242551405425 - 2¹ = 242551405423 is a prime.

It is not an unprimeable number, because it can be changed into a prime (242551405423) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 7950601 + ... + 7981049.

It is an arithmetic number, because the mean of its divisors is an integer number (9548998200).

Almost surely, 2^242551405425 is an apocalyptic number.

242551405425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

242551405425 is a deficient number, since it is larger than the sum of its proper divisors (215800508175).

242551405425 is a wasteful number, since it uses less digits than its factorization.

242551405425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45642 (or 45637 counting only the distinct ones).

The product of its (nonzero) digits is 320000, while the sum is 39.

The spelling of 242551405425 in words is "two hundred forty-two billion, five hundred fifty-one million, four hundred five thousand, four hundred twenty-five".