251255545045 has 16 divisors (see below), whose sum is σ = 317438280000. Its totient is φ = 190387542528.

The previous prime is 251255545039. The next prime is 251255545081. The reversal of 251255545045 is 540545552152.

It is a cyclic number.

It is not a de Polignac number, because 251255545045 - 2¹¹ = 251255542997 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 251255544992 and 251255545010.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 225061 + ... + 743749.

It is an arithmetic number, because the mean of its divisors is an integer number (19839892500).

Almost surely, 2^251255545045 is an apocalyptic number.

It is an amenable number.

251255545045 is a deficient number, since it is larger than the sum of its proper divisors (66182734955).

251255545045 is a wasteful number, since it uses less digits than its factorization.

251255545045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 523812.

The product of its (nonzero) digits is 1000000, while the sum is 43.

The spelling of 251255545045 in words is "two hundred fifty-one billion, two hundred fifty-five million, five hundred forty-five thousand, forty-five".