25230367761987 has 4 divisors (see below), whose sum is σ = 33640490349320. Its totient is φ = 16820245174656.

The previous prime is 25230367761979. The next prime is 25230367761997. The reversal of 25230367761987 is 78916776303252.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 25230367761987 - 2³ = 25230367761979 is a prime.

It is a super-2 number, since 2×25230367761987² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25230367761997) 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, 4205061293662 + ... + 4205061293667.

It is an arithmetic number, because the mean of its divisors is an integer number (8410122587330).

Almost surely, 2^{25230367761987} is an apocalyptic number.

25230367761987 is a deficient number, since it is larger than the sum of its proper divisors (8410122587333).

25230367761987 is an equidigital number, since it uses as much as digits as its factorization.

25230367761987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8410122587332.

The product of its (nonzero) digits is 160030080, while the sum is 66.

The spelling of 25230367761987 in words is "twenty-five trillion, two hundred thirty billion, three hundred sixty-seven million, seven hundred sixty-one thousand, nine hundred eighty-seven".