25012501503 has 16 divisors (see below), whose sum is σ = 36392264832. Its totient is φ = 15154740000.

The previous prime is 25012501457. The next prime is 25012501517. The reversal of 25012501503 is 30510521052.

It is a happy number.

It is not a de Polignac number, because 25012501503 - 2⁹ = 25012500991 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25012501583) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9828 + ... + 223878.

It is an arithmetic number, because the mean of its divisors is an integer number (2274516552).

Almost surely, 2^25012501503 is an apocalyptic number.

25012501503 is a deficient number, since it is larger than the sum of its proper divisors (11379763329).

25012501503 is a wasteful number, since it uses less digits than its factorization.

25012501503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217606.

The product of its (nonzero) digits is 1500, while the sum is 24.

The spelling of 25012501503 in words is "twenty-five billion, twelve million, five hundred one thousand, five hundred three".