245325131581 has 8 divisors (see below), whose sum is σ = 260347728960. Its totient is φ = 230368279488.

The previous prime is 245325131563. The next prime is 245325131603. The reversal of 245325131581 is 185131523542.

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

It is not a de Polignac number, because 245325131581 - 2¹⁷ = 245325000509 is a prime.

It is a super-2 number, since 2×245325131581² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245325131561) 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, 16428631 + ... + 16443556.

It is an arithmetic number, because the mean of its divisors is an integer number (32543466120).

Almost surely, 2^245325131581 is an apocalyptic number.

It is an amenable number.

245325131581 is a deficient number, since it is larger than the sum of its proper divisors (15022597379).

245325131581 is a wasteful number, since it uses less digits than its factorization.

245325131581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32872643.

The product of its digits is 144000, while the sum is 40.

The spelling of 245325131581 in words is "two hundred forty-five billion, three hundred twenty-five million, one hundred thirty-one thousand, five hundred eighty-one".