25512001203 has 32 divisors (see below), whose sum is σ = 37115814400. Its totient is φ = 15586185888.

The previous prime is 25512001181. The next prime is 25512001243. The reversal of 25512001203 is 30210021552.

It is not a de Polignac number, because 25512001203 - 2¹² = 25511997107 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 25512001203.

It is not an unprimeable number, because it can be changed into a prime (25512001243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 902226 + ... + 930072.

It is an arithmetic number, because the mean of its divisors is an integer number (1159869200).

Almost surely, 2^25512001203 is an apocalyptic number.

25512001203 is a deficient number, since it is larger than the sum of its proper divisors (11603813197).

25512001203 is a wasteful number, since it uses less digits than its factorization.

25512001203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28028 (or 28002 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 21.

Adding to 25512001203 its reverse (30210021552), we get a palindrome (55722022755).

The spelling of 25512001203 in words is "twenty-five billion, five hundred twelve million, one thousand, two hundred three".