25142020231987 has 8 divisors (see below), whose sum is σ = 25337994055920. Its totient is φ = 24946673525280.

The previous prime is 25142020231973. The next prime is 25142020231997. The reversal of 25142020231987 is 78913202024152.

It is a happy number.

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 25142020231987 - 2⁷ = 25142020231859 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25142020231907) 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, 156698812 + ... + 156859177.

It is an arithmetic number, because the mean of its divisors is an integer number (3167249256990).

Almost surely, 2^{25142020231987} is an apocalyptic number.

25142020231987 is a deficient number, since it is larger than the sum of its proper divisors (195973823933).

25142020231987 is a wasteful number, since it uses less digits than its factorization.

25142020231987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 313558613.

The product of its (nonzero) digits is 483840, while the sum is 46.

The spelling of 25142020231987 in words is "twenty-five trillion, one hundred forty-two billion, twenty million, two hundred thirty-one thousand, nine hundred eighty-seven".