25152040487 has 4 divisors (see below), whose sum is σ = 28745189136. Its totient is φ = 21558891840.

The previous prime is 25152040483. The next prime is 25152040499. The reversal of 25152040487 is 78404025152.

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 25152040487 - 2² = 25152040483 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 25152040487.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25152040483) 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, 1796574314 + ... + 1796574327.

It is an arithmetic number, because the mean of its divisors is an integer number (7186297284).

Almost surely, 2^25152040487 is an apocalyptic number.

25152040487 is a deficient number, since it is larger than the sum of its proper divisors (3593148649).

25152040487 is an equidigital number, since it uses as much as digits as its factorization.

25152040487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3593148648.

The product of its (nonzero) digits is 89600, while the sum is 38.

The spelling of 25152040487 in words is "twenty-five billion, one hundred fifty-two million, forty thousand, four hundred eighty-seven".