251540425453 has 8 divisors (see below), whose sum is σ = 251947804896. Its totient is φ = 251133128400.

The previous prime is 251540425441. The next prime is 251540425547. The reversal of 251540425453 is 354524045152.

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

It is a cyclic number.

It is not a de Polignac number, because 251540425453 - 2¹⁷ = 251540294381 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 (251540825453) 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, 9750750 + ... + 9776512.

It is an arithmetic number, because the mean of its divisors is an integer number (31493475612).

Almost surely, 2^251540425453 is an apocalyptic number.

It is an amenable number.

251540425453 is a deficient number, since it is larger than the sum of its proper divisors (407379443).

251540425453 is a wasteful number, since it uses less digits than its factorization.

251540425453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41195.

The product of its (nonzero) digits is 480000, while the sum is 40.

The spelling of 251540425453 in words is "two hundred fifty-one billion, five hundred forty million, four hundred twenty-five thousand, four hundred fifty-three".