245954125391 has 4 divisors (see below), whose sum is σ = 264873673512. Its totient is φ = 227034577272.

The previous prime is 245954125379. The next prime is 245954125429. The reversal of 245954125391 is 193521459542.

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 245954125391 - 2³⁰ = 244880383567 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 (245954125091) 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, 9459774041 + ... + 9459774066.

It is an arithmetic number, because the mean of its divisors is an integer number (66218418378).

Almost surely, 2^245954125391 is an apocalyptic number.

245954125391 is a deficient number, since it is larger than the sum of its proper divisors (18919548121).

245954125391 is a wasteful number, since it uses less digits than its factorization.

245954125391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18919548120.

The product of its digits is 1944000, while the sum is 50.

The spelling of 245954125391 in words is "two hundred forty-five billion, nine hundred fifty-four million, one hundred twenty-five thousand, three hundred ninety-one".