25642460503 has 8 divisors (see below), whose sum is σ = 28033499520. Its totient is φ = 23261405880.

The previous prime is 25642460489. The next prime is 25642460507. The reversal of 25642460503 is 30506424652.

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 25642460503 - 2¹⁷ = 25642329431 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 (25642460507) 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, 2490723 + ... + 2500996.

It is an arithmetic number, because the mean of its divisors is an integer number (3504187440).

Almost surely, 2^25642460503 is an apocalyptic number.

25642460503 is a deficient number, since it is larger than the sum of its proper divisors (2391039017).

25642460503 is a wasteful number, since it uses less digits than its factorization.

25642460503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4992197.

The product of its (nonzero) digits is 172800, while the sum is 37.

The spelling of 25642460503 in words is "twenty-five billion, six hundred forty-two million, four hundred sixty thousand, five hundred three".