15540025245 has 32 divisors (see below), whose sum is σ = 25750794240. Its totient is φ = 7997398080.

The previous prime is 15540025229. The next prime is 15540025283. The reversal of 15540025245 is 54252004551.

It is not a de Polignac number, because 15540025245 - 2⁴ = 15540025229 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 105175 + ... + 205284.

It is an arithmetic number, because the mean of its divisors is an integer number (804712320).

Almost surely, 2^15540025245 is an apocalyptic number.

15540025245 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

15540025245 is a deficient number, since it is larger than the sum of its proper divisors (10210768995).

15540025245 is a wasteful number, since it uses less digits than its factorization.

15540025245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 310585.

The product of its (nonzero) digits is 40000, while the sum is 33.

Adding to 15540025245 its reverse (54252004551), we get a palindrome (69792029796).

The spelling of 15540025245 in words is "fifteen billion, five hundred forty million, twenty-five thousand, two hundred forty-five".